Start
Prove Yourself A Detective!
The case will not be handed to just anyone.
Only a mind skilled in place value may proceed.
My hundred-thousands digit is 7. My ten-thousands digit is 3 less. My thousands digit is half of that. My hundreds digit is 4 more than my thousands digit. My tens digit is 5 less than my hundreds digit. My ones digit is 2 more than my tens digit. Beyond the decimal, the pattern continues… My tenths digit matches my thousands digit. My hundredths digit is 1 more. My thousandths digit is 2 more than that.
Your assignment is clear, detective:
The Master Math Formula has been stolen— a powerful code capable of controlling every calculation, every system, every solution.
inside this mansion is responsible.
Determine WHO took the formula…
WHERE it was hidden…
Every suspect had access.
Someone...
Impressive…
In the wrong hands… it could throw everything into chaos. We don’t know how it was taken.
That’s why this case has been placed in your hands.
and HOW it was used.
You’ve proven yourself worthy.
Not many can crack a code like that.
Study every clue.
Question Every Detail.
Every suspect has a motive.
Trust no one.
We don’t know where it’s been hidden. But we do know this…
in the MATH!
Because the truth is hidden...
Let's Meet the Suspects
Start
You cracked the first layer—but this case runs deeper than surface numbers. The kind of deeper where every digit has power… and position is everything. The next clue points to the highest place in the number—higher than the millions, higher than the ten millions… all the way up in the hundred millions. That’s where the truth is hiding.
Back to Map
“The detective report was damaged… key vocabulary was missing. Without it, the team can’t understand how the thief manipulated the formula.”
“The rest of the report wasn’t about decimals… it focused on whole numbers and how the thief scaled values up and down.”
The stolen formula wasn’t taken all at once…it was recorded in smaller test samples. In the lab notes, this entry was found: ‘Each test sample contains 0.437 grams of the compound. The full formula requires 1,000 times that amount.’ Detective, calculate the total amount of the compound used in the full formula.
“The thief didn’t just steal the formula… they tried to scramble the data to cover their tracks. Inside the vault, two chemical measurements were recovered: Sample A: 12.74638 grams Sample B: 8.59367 grams A note beside them reads: ‘Only the clean numbers reveal the truth.’ Detective… your job is to: 1. Round each measurement to the nearest thousandth, 2. Then add them together to uncover the final value of the stolen formula.
You enter Multiplication Hall and find it filled with scattered files and coded notes. You find a note that reads, “Only those who can organize the results… can unlock the truth.” A stack of multiplication problems lies on the table—but they’re completely out of order.
Back
You push deeper into Multiplication Hall and find a large metal crate hidden behind stacks of old equations. Scratched into the surface are the words:
“The formula was hidden… not flat, but filled. Find the space it takes, and you’ll unlock the next clue.”
A note beside it lists the crate’s dimensions.
For a moment… everything goes still.
Then—click.
A drawer slides open, revealing a strip of coded numbers and a note:
“You’ve learned how numbers move… now prove you can control them.”
“Each answer unlocks a piece. Put them together… and the code is yours.”
1. 7
×
1002. 45
×
10 3. 6
×
1,000 4. 82
×
10
Solve each problem.
Take the hundreds digit from #1 Take the tens digit from #2 Take the thousands digit from #3 Take the ones digit from #4
The room grows quieter as another lock releases.
A hidden compartment slides open from the side of a desk. Inside, you find a shipping log—creased, smudged, and rushed… like whoever filled it out didn’t have much time.
Scrawled across the top:
“The formula wasn’t taken all at once…”
“It was moved… piece by piece.”
You scan the entry below. Rows of crates. Numbers. Totals left unfinished.
“Find the total… and you’ll know how much was taken.”
The drawer slams shut behind you.
For a moment, everything is still.
Then—click.
A projector flickers on across the room, casting a distorted image onto the wall. It’s not a list… not a shipment…
It’s a comparison chart.
Two sets of numbers. One clearly larger than the other.
A message types itself across the screen:
“Not everything was taken equally…”
“Some quantities were multiplied… others were not.”
You step closer. The screen flickers again… then splits into multiple equations.They look similar—but something’s off. Parentheses appear. Numbers shift positions. A new message types across the wall: “Same numbers… different outcomes.”“Only those who follow the order… will find the truth.” You lean in closer.“Multiplication is all you need… but how you group it changes everything.” 72 is the key!
A hidden door slides open, revealing a dimly lit office. Papers are scattered everywhere—calculations, diagrams, and half-finished work. Whoever was here… left in a hurry.
On the wall, written in hurried chalk:
“I didn’t just move numbers… I built them.”
You step closer. These aren’t simple calculations anymore.
They’re larger… more complex.
“If you can multiply what was built… you’ll uncover what was taken.”
The door creaks open slowly as you step inside Division Den… and immediately, something feels different. The air is colder here. Sharper. More precise.
Rows of filing cabinets line the walls, each labeled with numbers neatly broken apart. Papers are stacked perfectly—nothing out of place. Whoever was here… they liked things separated, organized… divided.
A dim desk lamp flickers to life. Beneath it, a note:
“Only those who can break things into equal parts will move forward. Choose wisely… not everything divides the way it seems.”
A chill runs down your spine. This is no place for guessing.
Back
You push further into Division Den, the silence now almost deafening. As you pass the rows of neatly labeled files, one drawer suddenly slides open on its own…
Inside—another clue.
A low mechanical hum begins. Gears shift somewhere behind the walls. A new message flickers onto an old screen:
“Not everything divides perfectly… sometimes there are leftovers. Only those who understand what remains can move forward.”
The tension builds. This one feels trickier.
As you confirm the next clue, the case snaps open—but inside isn’t the answer…
It’s a keypad.
The lights dim. A single spotlight shines on the wall as words slowly appear:
“No more choices… no more guessing.
Only one answer will unlock the truth.
Divide carefully… what remains is the code.”
A final file slides out in front of you.
Just when you think the case is closed, a hidden drawer pops open behind you…
Inside is a partially burned report. The edges are charred, but parts of the text are still readable. Some key words are missing—as if someone tried to erase the method used.
A message scrolls across the screen:
“Understanding the process reveals the truth… fill in what’s missing to continue.”
A keypad flashes green… then suddenly turns red.
A deeper rumble shakes the room.
From the shadows, a massive steel door rises—the true final barrier. This wasn’t the end… it was just a test.
A voice crackles over the intercom:
“You’ve done well… but the final truth was never meant to be easy.
This requires precision. Focus. Control.
One mistake… and the trail goes cold.”
Numbers begin scrolling rapidly across a large screen before freezing into place.
“Divide… and uncover what remains. The final code depends on it.”
The door to the Addition Office creaks open with a slow, deliberate groan. Inside, the room hums with quiet tension—papers stacked in perfect columns, numbers scribbled across chalkboards, and calculators sitting untouched, as if someone left in a hurry. A dim desk lamp flickers, casting long shadows across a ledger left open in the center of the room.
You step closer.
Three large numbers are circled in red ink… almost like someone was in the middle of adding them together before they disappeared. This could be important. If you can finish the calculation, you might uncover the next piece of the mystery.
But be careful… in this office, every number matters.
Back
The numbers click into place, and with a soft ding, a drawer slides open on the desk. Inside, you find another slip of paper—this one more hurried, like it was written in a rush.
The same pattern… more numbers… more clues.
Whoever was here wasn’t just adding—they were tracking something. Carefully. Precisely.
If you can solve this next total, you might get one step closer to figuring out what they were hiding… and why.
The last total settles, and with a sharp click, a hidden compartment opens behind the desk. Inside, you find a neatly typed training document—almost like a guide left behind on purpose.
But something’s off…
Important words have been removed, as if someone didn’t want just anyone understanding how everything in the Addition Office works. If you can fill in the missing pieces, you might finally understand what was really happening here.
You mark the Number Vault off your list, the red X standing out like a solved piece of the puzzle. But something still doesn’t sit right…
Tucked beneath the file, you notice one last note—less organized, more urgent. It looks like someone was trying to make sense of everything before they left.
This is it. The final record from the Addition Office.
If you can piece together what happened here, you’ll be one step closer to uncovering the truth behind the stolen formula.
Stay focused… this one will require you to pull the numbers from the story itself.
The final total settles, and the room goes still.
For a moment, nothing happens… then the desk drawer slowly slides shut on its own. The papers inside rearrange as if guided by an unseen hand, leaving just one last note behind.
You’ve done it.
Every number in the Addition Office has been accounted for. Every record checked. Whoever was here was careful—but not careful enough.
This final problem isn’t about everything… it’s about knowing what actually matters.
Choose wisely. The wrong numbers could lead you off track.
As you step into Subtraction Alley, the lights flicker overhead and a cool breeze rushes past. The walls are lined with old receipts, torn number lines, and chalkboard markings where numbers have been… removed.
You notice something strange—every clue here seems to involve things going missing. Totals don’t match. Amounts don’t add up.
A faded sign on the wall reads:
“To uncover the truth, you must find what’s been taken away.”
You hear footsteps echo in the distance… you’re not alone. It’s time to sharpen your subtraction skills and follow the trail.
Back
You follow the trail deeper into Subtraction Alley, where the clues become harder to ignore. A ledger lies open on a rusted table, its pages filled with totals that have clearly been altered.
Some numbers are scratched out… others don’t match what’s left behind.
A note scribbled in the margin catches your eye:
“They didn’t take everything… just enough to avoid suspicion.”
Whoever took the formula was careful—but not careful enough. Time to uncover exactly what was taken.
You move further into Subtraction Alley and discover a crumpled report taped to a flickering light post. It looks like someone tried to erase important details, but not everything is gone.
If you can piece together what’s missing, you might uncover a crucial part of the mystery.
A message is scribbled across the top:
“The truth is what remains… after everything else is taken away.”
You push past a loose metal gate and find yourself at the end of Subtraction Alley. The air is tense. A final report sits inside a locked case, its numbers partially scratched out—but not completely gone.
This must be one of the last records before the formula disappeared. If you can figure out what’s missing here, you might be able to trace exactly what was taken… and who took it.
A warning is etched into the glass:
“Only those who can subtract the truth will unlock the final clue.”
You’ve reached the end of Subtraction Alley. The flickering lights go out for a moment… then suddenly, one final screen powers on.
A hidden message appears—this is it. The last recorded transaction before the formula vanished. Whoever did this tried to erase the evidence completely… but they missed something.
If you can solve this final problem, you’ll expose exactly what was taken—and unlock the clue that clears Subtraction Alley from your list.
The message flashes one last time:
“Nothing disappears without a trace… unless you fail to subtract correctly.”
As you step into Measurement Alley, the walls shift and stretch like giant rulers coming to life. Tape measures slither across the ground, and glowing yardsticks hang overhead. A voice echoes through the alley:
"Only those who truly understand measurement can move forward… Convert, compare, and calculate wisely… one mistake, and you’ll be stuck measuring forever!"
You notice a locked gate ahead with five glowing panels—each one requiring a correct answer to unlock your path.
Back
As the first panel lights up, the ground beneath you shifts into a giant grid of tiles labeled with different units. A large scale rises from the floor, unbalanced and flickering. The voice returns:
"Sorting was only the beginning… Now you must balance the measurements. Only equal values will restore order!"
A new panel glows, waiting for your answer.
The scale suddenly locks into place, and a hidden door creaks open. As you step through, the alley narrows and the walls transform into giant measuring cups, rulers, and clocks. Numbers drip down like liquid measurements.
A glowing message appears:
"You’ve balanced the units… but can you apply them? True mastery means solving real problems!"
A new panel slides forward with a challenge embedded inside a passage.
As the total locks in, the containers disappear and the ground begins to glow. A long path stretches ahead, but sections are missing. Floating measurement tiles hover in the air, waiting to be placed correctly.
The voice echoes again:
"One final conversion stands between you and the exit… choose wisely, or the path will collapse!"
The final tile locks into place and the alley begins to rumble. The walls stretch taller, forming a massive gate covered in glowing measurement symbols. A beam of light shines down on one final panel.
The voice returns, louder than ever:
"You’ve converted… compared… and calculated. But only those who can apply all skills at once may escape Measurement Alley. This is your final test!"
The gate pulses, waiting for one last answer…
You push open the heavy glass door and step into the Fraction Lab—beakers bubbling, measuring tubes glowing, and charts of fractions covering every wall. Something feels… off.
A half-filled beaker sits abandoned on the table. Next to it, a note reads:
"The formula was split… but only someone who understands fractions could piece it back together."
You realize this lab holds critical clues—but only if you can think like a fraction expert. Solve the problems, and you’ll get one step closer to uncovering who stole the mystery formula.
Back
As you correctly sort the fractions, a hidden compartment clicks open beneath the lab table. Inside, you find a partially completed experiment log.
It reads:
"The formula was combined in stages… but something is missing. Only the correct total will reveal the next clue."
You notice two beakers labeled with fractional amounts—but the final mixture was never recorded.
As you calculate the total, the machine beside you hums to life. A screen flashes:
"Warning: Sample removed before completion."
You scan the lab and notice a tipped-over beaker. Some of the mixture is gone… and that missing amount could be the clue you need.
As you determine how much of the mixture remains, a drawer slides open revealing a crumpled page from the scientist’s notebook.
The handwriting is rushed, but you can make out parts of it. Some key words are missing—as if someone tried to erase the evidence.
If you can correctly complete the passage, you might understand what happened in the lab.
Back
As you correctly complete the scientist’s notes, the entire lab begins to glow. A hidden screen lights up with one final message:
"The formula was never whole… it was built in layers. Only those who can combine and break apart fractions will uncover the truth."
A locked container rises from the center of the lab. On its surface is one final problem. Solve it correctly, and you’ll unlock the clue that reveals what really happened in the Fraction Lab…
You step into the Geometry Gallery, where the walls are lined with mysterious shapes, glowing lines, and hidden patterns. Paintings shift as you walk by, revealing clues only sharp mathematicians can see. A voice echoes through the room: “Only those who understand the properties of shapes can uncover the truth…”
A locked display case sits in the center—your first clue is hidden inside. To open it, you must prove your knowledge of geometry!
As the tiled floor settles into place, a hidden platform slowly rises from the center of the Geometry Gallery. Resting on top is a complex 3D structure built from stacked rectangular prisms. A note appears beside it:
“Some figures must be broken apart to understand the whole.”
To move forward, you’ll need to determine the total volume of the structure by analyzing each part.
As you calculate the volume, the structure splits apart and slides to the sides. Beneath it, a panel lights up showing a series of shapes connected by lines. One shape is highlighted—it’s the key to unlocking the final clue.
A note appears:
“Classify carefully… only one shape meets all the conditions.”
As the wall continues to open, a detailed diagram appears—this time more complex. The shape is divided into equal sections, but not all are shaded. A note beside it reads:
“It’s not just about parts… it’s about understanding how they combine.”
Only those who can reason through the pieces will unlock the final path.
As you identify the correct point, the grid begins to glow and a hidden outline slowly appears—but only part of it is visible. A message flashes across the gallery:
“One point reveals the shape… but only true understanding will unlock it.”
Click the correct coordinates to reveal the hidden figure. Then, identify the shape to escape the Geometry Gallery.
Click on (8,7)
You’ve made it this far—through every room, every clue, and every challenge. The pieces of the mystery are now in your hands. Each problem you solved helped eliminate possibilities and uncover the truth behind the stolen formula.
Now it all comes down to this.
You will have ONE chance to identify: Who is guilty What tool they used Which room the formula was taken from Think carefully. Go back through the clues in your mind. Every detail matters, and only one combination fits all the evidence.
Once you submit your answer, the case will be closed—there are no second chances.
Choose wisely, detective… the truth is waiting.
“Every calculation in Division Den required breaking numbers apart—finding equal groups, tracking what remained. Not once did the evidence call for combining totals… not once did it require addition.”
You think back through every clue… every problem… every step.
Nothing was added. Everything was divided.
A final line types across the screen:
“The Addition Office deals in combining quantities… but this case was never about bringing numbers together. It was about pulling them apart.”
That’s all the proof you need.
🕵️♂️ The Addition Office can be crossed off the list. Click here
As you continue working through the clues in the Addition Office, a new detail stands out. The numbers and calculations point to combining values and tracking totals—nothing here connects to shapes, angles, or geometric designs.
If the formula had been taken from the Geometry Gallery, you would expect to see clues involving lines, figures, or spatial reasoning. But everything here is focused strictly on addition and numerical patterns.
The evidence doesn’t match.
You can eliminate the Geometry Gallery from your list—it’s not where the formula was taken from. Click Here
As you continue investigating in the Measurement Workshop, the evidence points to comparing sizes, lengths, and amounts—not taking numbers away. Every clue focuses on measuring precisely and determining how much or how long, rather than finding differences between values.
If the formula had been taken from Subtraction Alley, you would expect to see clues involving taking away, decreasing amounts, or solving for what remains after something is removed.
But that’s not what you’re seeing here.
You can eliminate Subtraction Alley from your list—it’s not where the formula was taken from.
You scan the Division Den carefully, eyes moving from one surface to the next. Something doesn’t add up. There are no measuring tools here—no rulers, no scales, nothing that suggests lengths, weights, or units were involved.
You pause, thinking back to the workshop. Everything there had been perfectly arranged… untouched. No signs of use, no disruption—just order.
Whoever took the formula didn’t need to measure anything.
The realization settles in.
The Measurement Workshop can be crossed off your list. Click Here!
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As you examine the clues in the Fraction Lab, the evidence focuses on parts of a whole—comparing fractions, combining pieces, and understanding relationships between portions. Everything here is about how parts fit together, not how numbers are split into equal groups.
Dr. Division is known for breaking things apart into equal shares, but that’s not what these clues show. Instead, the work highlights building and analyzing fractions, not dividing quantities.
The approach doesn’t match his methods.
You can eliminate Dr. Division—he is not responsible for the theft.
As you study the clues in the Geometry Gallery, the focus is clear—shapes, angles, lines, and how figures are connected in space. Every piece of evidence points to visual reasoning and understanding how parts fit together, not repeated addition or scaling numbers.
Multiplication Hall is all about groups and patterns of numbers, but none of those strategies appear here. Instead, the clues rely on identifying figures and analyzing their relationships.
The methods don’t match.
You can eliminate Multiplication Hall from your list—it’s not where the formula was taken from.
You carefully fill in the missing words, and as the final blank is completed, the paper hums softly in your hands. The letters begin to shift… then lock into place. A hidden message appears at the bottom of the page: “The numbers were never hidden there… you’ve been looking in the wrong place.” You pause. The Number Vault—once thought to be a key location—suddenly doesn’t add up anymore. There’s no evidence left behind, no trail, no connection to the stolen formula. You lean back, thinking it through. You can officially eliminate the Number Vault from your list of possible locations. One less room. One step closer to the truth. (Click to Continue)
Excellent detective work! You carefully analyzed the clues, double-checked the evidence, and made smart mathematical connections—and it paid off. When you examined the situation closely, you realized that Detective Factor’s methods don’t match what was needed to solve this part of the mystery. The evidence shows that his approach doesn’t fit the problem, and his tools wouldn’t lead to the correct solution.
Because of your strong reasoning and attention to detail… Detective Factor can officially be crossed off the suspect list!
You’re one step closer to cracking the case. Stay sharp, trust your thinking, and keep following the clues—the truth is getting closer! Click Here
The screen fades to black… then flashes back on.A new report appears—clean, precise… almost untouched.You step closer.“No digital records.”“No stored calculations.”“No evidence of electronic use.”An image of a calculator flickers onto the screen… then a bold red mark slashes across it.You scan the room again. No key presses. No shortcuts. No easy way out.Whoever did this… did it all by hand.A final message types across the display:“The calculator was never used.”You nod, piecing it together.The calculator can be eliminated. Cross it off your list. Click Here
No clipboard at the scene. Not a single note, not a scribble, not even a torn scrap of paper. Whoever pulled this job didn’t write a thing down. If a tool is used for recording or writing… cross it off your list. Click Here to Continue
The next drawer slides open slower than the others… almost hesitant. Inside is a personnel file—stamped and sealed.You flip it open. Professor Product. Every movement. Every calculation. Every location—accounted for. A final note is paperclipped to the report: “Verified presence in Multiplication Hall during the incident.” “Multiple witnesses confirm—never left the room.”You scan the timestamps again. They’re airtight. Too clean to argue. You lean back, thinking it through. If Professor Product never left… then he couldn’t have hidden the formula. A bold red stamp marks the bottom of the page: CLEARED. Professor Product is no longer a suspect. Cross him off your list. Click Here To Continue
As you sort through the number logs in the Addition Office, something doesn’t add up—at least, not in the way Miss Multiply would expect. Every clue here relies on combining values step-by-step, not grouping or scaling them. Miss Multiply is known for efficiency and shortcuts through multiplication, but this work shows careful, deliberate addition with no sign of her usual methods. The calculations don’t match her style. Miss Multiply can be crossed off the list—she’s not your culprit. Click Here
As you investigate the Measurement Workshop, the clues point clearly to units, lengths, and precise comparisons. Everything here is about measuring carefully—checking sizes, distances, and amounts with accuracy.
A beaker is used for mixing and holding liquids in experiments, but none of the evidence shows any signs of pouring, combining substances, or scientific testing. The work here is focused on measurement, not experimentation.
The tool doesn’t match the task.
You can eliminate the beaker—it was not used in the theft.
As you work your way through Subtraction Alley, carefully finding the differences between each clue, something becomes clear. The work here requires breaking numbers apart and tracking what remains—not zooming in or examining fine details.
A magnifying glass would help someone look closer, but none of the evidence here needed that kind of tool. Every clue was solved through calculation and reasoning, not observation.
The method doesn’t match the tool.
You can eliminate the magnifying glass—it was not used in the theft.
As you review all the clues you’ve gathered so far, something stands out. None of the evidence points to dividing numbers into equal groups or sharing values evenly—the key ideas behind Division Den.
Instead, every clue has focused on combining, comparing, or finding differences, not splitting into parts. If the formula had been taken from Division Den, you would expect to see clear signs of division strategies.
But those clues are missing.
You can eliminate Division Den from your list—it’s not where the formula was taken from.
The Case of the Stolen Formula
Joshua Prentice
Created on March 20, 2026
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Transcript
Start
Prove Yourself A Detective!
The case will not be handed to just anyone.
Only a mind skilled in place value may proceed.
My hundred-thousands digit is 7. My ten-thousands digit is 3 less. My thousands digit is half of that. My hundreds digit is 4 more than my thousands digit. My tens digit is 5 less than my hundreds digit. My ones digit is 2 more than my tens digit. Beyond the decimal, the pattern continues… My tenths digit matches my thousands digit. My hundredths digit is 1 more. My thousandths digit is 2 more than that.
Your assignment is clear, detective:
The Master Math Formula has been stolen— a powerful code capable of controlling every calculation, every system, every solution.
inside this mansion is responsible.
Determine WHO took the formula…
WHERE it was hidden…
Every suspect had access.
Someone...
Impressive…
In the wrong hands… it could throw everything into chaos. We don’t know how it was taken.
That’s why this case has been placed in your hands.
and HOW it was used.
You’ve proven yourself worthy.
Not many can crack a code like that.
Study every clue.
Question Every Detail.
Every suspect has a motive.
Trust no one.
We don’t know where it’s been hidden. But we do know this…
in the MATH!
Because the truth is hidden...
Let's Meet the Suspects
Start
You cracked the first layer—but this case runs deeper than surface numbers. The kind of deeper where every digit has power… and position is everything. The next clue points to the highest place in the number—higher than the millions, higher than the ten millions… all the way up in the hundred millions. That’s where the truth is hiding.
Back to Map
“The detective report was damaged… key vocabulary was missing. Without it, the team can’t understand how the thief manipulated the formula.”
“The rest of the report wasn’t about decimals… it focused on whole numbers and how the thief scaled values up and down.”
The stolen formula wasn’t taken all at once…it was recorded in smaller test samples. In the lab notes, this entry was found: ‘Each test sample contains 0.437 grams of the compound. The full formula requires 1,000 times that amount.’ Detective, calculate the total amount of the compound used in the full formula.
“The thief didn’t just steal the formula… they tried to scramble the data to cover their tracks. Inside the vault, two chemical measurements were recovered: Sample A: 12.74638 grams Sample B: 8.59367 grams A note beside them reads: ‘Only the clean numbers reveal the truth.’ Detective… your job is to: 1. Round each measurement to the nearest thousandth, 2. Then add them together to uncover the final value of the stolen formula.
You enter Multiplication Hall and find it filled with scattered files and coded notes. You find a note that reads, “Only those who can organize the results… can unlock the truth.” A stack of multiplication problems lies on the table—but they’re completely out of order.
Back
You push deeper into Multiplication Hall and find a large metal crate hidden behind stacks of old equations. Scratched into the surface are the words: “The formula was hidden… not flat, but filled. Find the space it takes, and you’ll unlock the next clue.” A note beside it lists the crate’s dimensions.
For a moment… everything goes still. Then—click. A drawer slides open, revealing a strip of coded numbers and a note: “You’ve learned how numbers move… now prove you can control them.” “Each answer unlocks a piece. Put them together… and the code is yours.”
1. 7 × 1002. 45 × 10 3. 6 × 1,000 4. 82 × 10
Solve each problem.
Take the hundreds digit from #1 Take the tens digit from #2 Take the thousands digit from #3 Take the ones digit from #4
The room grows quieter as another lock releases. A hidden compartment slides open from the side of a desk. Inside, you find a shipping log—creased, smudged, and rushed… like whoever filled it out didn’t have much time. Scrawled across the top: “The formula wasn’t taken all at once…” “It was moved… piece by piece.” You scan the entry below. Rows of crates. Numbers. Totals left unfinished. “Find the total… and you’ll know how much was taken.”
The drawer slams shut behind you. For a moment, everything is still. Then—click. A projector flickers on across the room, casting a distorted image onto the wall. It’s not a list… not a shipment… It’s a comparison chart. Two sets of numbers. One clearly larger than the other. A message types itself across the screen: “Not everything was taken equally…” “Some quantities were multiplied… others were not.” You step closer. The screen flickers again… then splits into multiple equations.They look similar—but something’s off. Parentheses appear. Numbers shift positions. A new message types across the wall: “Same numbers… different outcomes.”“Only those who follow the order… will find the truth.” You lean in closer.“Multiplication is all you need… but how you group it changes everything.” 72 is the key!
A hidden door slides open, revealing a dimly lit office. Papers are scattered everywhere—calculations, diagrams, and half-finished work. Whoever was here… left in a hurry. On the wall, written in hurried chalk: “I didn’t just move numbers… I built them.” You step closer. These aren’t simple calculations anymore. They’re larger… more complex. “If you can multiply what was built… you’ll uncover what was taken.”
The door creaks open slowly as you step inside Division Den… and immediately, something feels different. The air is colder here. Sharper. More precise. Rows of filing cabinets line the walls, each labeled with numbers neatly broken apart. Papers are stacked perfectly—nothing out of place. Whoever was here… they liked things separated, organized… divided. A dim desk lamp flickers to life. Beneath it, a note: “Only those who can break things into equal parts will move forward. Choose wisely… not everything divides the way it seems.” A chill runs down your spine. This is no place for guessing.
Back
You push further into Division Den, the silence now almost deafening. As you pass the rows of neatly labeled files, one drawer suddenly slides open on its own… Inside—another clue. A low mechanical hum begins. Gears shift somewhere behind the walls. A new message flickers onto an old screen: “Not everything divides perfectly… sometimes there are leftovers. Only those who understand what remains can move forward.” The tension builds. This one feels trickier.
As you confirm the next clue, the case snaps open—but inside isn’t the answer… It’s a keypad. The lights dim. A single spotlight shines on the wall as words slowly appear: “No more choices… no more guessing. Only one answer will unlock the truth. Divide carefully… what remains is the code.” A final file slides out in front of you.
Just when you think the case is closed, a hidden drawer pops open behind you… Inside is a partially burned report. The edges are charred, but parts of the text are still readable. Some key words are missing—as if someone tried to erase the method used. A message scrolls across the screen: “Understanding the process reveals the truth… fill in what’s missing to continue.”
A keypad flashes green… then suddenly turns red. A deeper rumble shakes the room. From the shadows, a massive steel door rises—the true final barrier. This wasn’t the end… it was just a test. A voice crackles over the intercom: “You’ve done well… but the final truth was never meant to be easy. This requires precision. Focus. Control. One mistake… and the trail goes cold.” Numbers begin scrolling rapidly across a large screen before freezing into place. “Divide… and uncover what remains. The final code depends on it.”
The door to the Addition Office creaks open with a slow, deliberate groan. Inside, the room hums with quiet tension—papers stacked in perfect columns, numbers scribbled across chalkboards, and calculators sitting untouched, as if someone left in a hurry. A dim desk lamp flickers, casting long shadows across a ledger left open in the center of the room. You step closer. Three large numbers are circled in red ink… almost like someone was in the middle of adding them together before they disappeared. This could be important. If you can finish the calculation, you might uncover the next piece of the mystery. But be careful… in this office, every number matters.
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The numbers click into place, and with a soft ding, a drawer slides open on the desk. Inside, you find another slip of paper—this one more hurried, like it was written in a rush. The same pattern… more numbers… more clues. Whoever was here wasn’t just adding—they were tracking something. Carefully. Precisely. If you can solve this next total, you might get one step closer to figuring out what they were hiding… and why.
The last total settles, and with a sharp click, a hidden compartment opens behind the desk. Inside, you find a neatly typed training document—almost like a guide left behind on purpose. But something’s off… Important words have been removed, as if someone didn’t want just anyone understanding how everything in the Addition Office works. If you can fill in the missing pieces, you might finally understand what was really happening here.
You mark the Number Vault off your list, the red X standing out like a solved piece of the puzzle. But something still doesn’t sit right… Tucked beneath the file, you notice one last note—less organized, more urgent. It looks like someone was trying to make sense of everything before they left. This is it. The final record from the Addition Office. If you can piece together what happened here, you’ll be one step closer to uncovering the truth behind the stolen formula. Stay focused… this one will require you to pull the numbers from the story itself.
The final total settles, and the room goes still. For a moment, nothing happens… then the desk drawer slowly slides shut on its own. The papers inside rearrange as if guided by an unseen hand, leaving just one last note behind. You’ve done it. Every number in the Addition Office has been accounted for. Every record checked. Whoever was here was careful—but not careful enough. This final problem isn’t about everything… it’s about knowing what actually matters. Choose wisely. The wrong numbers could lead you off track.
As you step into Subtraction Alley, the lights flicker overhead and a cool breeze rushes past. The walls are lined with old receipts, torn number lines, and chalkboard markings where numbers have been… removed. You notice something strange—every clue here seems to involve things going missing. Totals don’t match. Amounts don’t add up. A faded sign on the wall reads: “To uncover the truth, you must find what’s been taken away.” You hear footsteps echo in the distance… you’re not alone. It’s time to sharpen your subtraction skills and follow the trail.
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You follow the trail deeper into Subtraction Alley, where the clues become harder to ignore. A ledger lies open on a rusted table, its pages filled with totals that have clearly been altered. Some numbers are scratched out… others don’t match what’s left behind. A note scribbled in the margin catches your eye: “They didn’t take everything… just enough to avoid suspicion.” Whoever took the formula was careful—but not careful enough. Time to uncover exactly what was taken.
You move further into Subtraction Alley and discover a crumpled report taped to a flickering light post. It looks like someone tried to erase important details, but not everything is gone. If you can piece together what’s missing, you might uncover a crucial part of the mystery. A message is scribbled across the top: “The truth is what remains… after everything else is taken away.”
You push past a loose metal gate and find yourself at the end of Subtraction Alley. The air is tense. A final report sits inside a locked case, its numbers partially scratched out—but not completely gone. This must be one of the last records before the formula disappeared. If you can figure out what’s missing here, you might be able to trace exactly what was taken… and who took it. A warning is etched into the glass: “Only those who can subtract the truth will unlock the final clue.”
You’ve reached the end of Subtraction Alley. The flickering lights go out for a moment… then suddenly, one final screen powers on. A hidden message appears—this is it. The last recorded transaction before the formula vanished. Whoever did this tried to erase the evidence completely… but they missed something. If you can solve this final problem, you’ll expose exactly what was taken—and unlock the clue that clears Subtraction Alley from your list. The message flashes one last time: “Nothing disappears without a trace… unless you fail to subtract correctly.”
As you step into Measurement Alley, the walls shift and stretch like giant rulers coming to life. Tape measures slither across the ground, and glowing yardsticks hang overhead. A voice echoes through the alley: "Only those who truly understand measurement can move forward… Convert, compare, and calculate wisely… one mistake, and you’ll be stuck measuring forever!" You notice a locked gate ahead with five glowing panels—each one requiring a correct answer to unlock your path.
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As the first panel lights up, the ground beneath you shifts into a giant grid of tiles labeled with different units. A large scale rises from the floor, unbalanced and flickering. The voice returns: "Sorting was only the beginning… Now you must balance the measurements. Only equal values will restore order!" A new panel glows, waiting for your answer.
The scale suddenly locks into place, and a hidden door creaks open. As you step through, the alley narrows and the walls transform into giant measuring cups, rulers, and clocks. Numbers drip down like liquid measurements. A glowing message appears: "You’ve balanced the units… but can you apply them? True mastery means solving real problems!" A new panel slides forward with a challenge embedded inside a passage.
As the total locks in, the containers disappear and the ground begins to glow. A long path stretches ahead, but sections are missing. Floating measurement tiles hover in the air, waiting to be placed correctly. The voice echoes again: "One final conversion stands between you and the exit… choose wisely, or the path will collapse!"
The final tile locks into place and the alley begins to rumble. The walls stretch taller, forming a massive gate covered in glowing measurement symbols. A beam of light shines down on one final panel. The voice returns, louder than ever: "You’ve converted… compared… and calculated. But only those who can apply all skills at once may escape Measurement Alley. This is your final test!" The gate pulses, waiting for one last answer…
You push open the heavy glass door and step into the Fraction Lab—beakers bubbling, measuring tubes glowing, and charts of fractions covering every wall. Something feels… off. A half-filled beaker sits abandoned on the table. Next to it, a note reads: "The formula was split… but only someone who understands fractions could piece it back together." You realize this lab holds critical clues—but only if you can think like a fraction expert. Solve the problems, and you’ll get one step closer to uncovering who stole the mystery formula.
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As you correctly sort the fractions, a hidden compartment clicks open beneath the lab table. Inside, you find a partially completed experiment log. It reads: "The formula was combined in stages… but something is missing. Only the correct total will reveal the next clue." You notice two beakers labeled with fractional amounts—but the final mixture was never recorded.
As you calculate the total, the machine beside you hums to life. A screen flashes: "Warning: Sample removed before completion." You scan the lab and notice a tipped-over beaker. Some of the mixture is gone… and that missing amount could be the clue you need.
As you determine how much of the mixture remains, a drawer slides open revealing a crumpled page from the scientist’s notebook. The handwriting is rushed, but you can make out parts of it. Some key words are missing—as if someone tried to erase the evidence. If you can correctly complete the passage, you might understand what happened in the lab.
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As you correctly complete the scientist’s notes, the entire lab begins to glow. A hidden screen lights up with one final message: "The formula was never whole… it was built in layers. Only those who can combine and break apart fractions will uncover the truth." A locked container rises from the center of the lab. On its surface is one final problem. Solve it correctly, and you’ll unlock the clue that reveals what really happened in the Fraction Lab…
You step into the Geometry Gallery, where the walls are lined with mysterious shapes, glowing lines, and hidden patterns. Paintings shift as you walk by, revealing clues only sharp mathematicians can see. A voice echoes through the room: “Only those who understand the properties of shapes can uncover the truth…” A locked display case sits in the center—your first clue is hidden inside. To open it, you must prove your knowledge of geometry!
As the tiled floor settles into place, a hidden platform slowly rises from the center of the Geometry Gallery. Resting on top is a complex 3D structure built from stacked rectangular prisms. A note appears beside it: “Some figures must be broken apart to understand the whole.” To move forward, you’ll need to determine the total volume of the structure by analyzing each part.
As you calculate the volume, the structure splits apart and slides to the sides. Beneath it, a panel lights up showing a series of shapes connected by lines. One shape is highlighted—it’s the key to unlocking the final clue. A note appears: “Classify carefully… only one shape meets all the conditions.”
As the wall continues to open, a detailed diagram appears—this time more complex. The shape is divided into equal sections, but not all are shaded. A note beside it reads: “It’s not just about parts… it’s about understanding how they combine.” Only those who can reason through the pieces will unlock the final path.
As you identify the correct point, the grid begins to glow and a hidden outline slowly appears—but only part of it is visible. A message flashes across the gallery: “One point reveals the shape… but only true understanding will unlock it.” Click the correct coordinates to reveal the hidden figure. Then, identify the shape to escape the Geometry Gallery.
Click on (8,7)
You’ve made it this far—through every room, every clue, and every challenge. The pieces of the mystery are now in your hands. Each problem you solved helped eliminate possibilities and uncover the truth behind the stolen formula. Now it all comes down to this. You will have ONE chance to identify: Who is guilty What tool they used Which room the formula was taken from Think carefully. Go back through the clues in your mind. Every detail matters, and only one combination fits all the evidence. Once you submit your answer, the case will be closed—there are no second chances. Choose wisely, detective… the truth is waiting.
“Every calculation in Division Den required breaking numbers apart—finding equal groups, tracking what remained. Not once did the evidence call for combining totals… not once did it require addition.” You think back through every clue… every problem… every step. Nothing was added. Everything was divided. A final line types across the screen: “The Addition Office deals in combining quantities… but this case was never about bringing numbers together. It was about pulling them apart.” That’s all the proof you need. 🕵️♂️ The Addition Office can be crossed off the list. Click here
As you continue working through the clues in the Addition Office, a new detail stands out. The numbers and calculations point to combining values and tracking totals—nothing here connects to shapes, angles, or geometric designs. If the formula had been taken from the Geometry Gallery, you would expect to see clues involving lines, figures, or spatial reasoning. But everything here is focused strictly on addition and numerical patterns. The evidence doesn’t match. You can eliminate the Geometry Gallery from your list—it’s not where the formula was taken from. Click Here
As you continue investigating in the Measurement Workshop, the evidence points to comparing sizes, lengths, and amounts—not taking numbers away. Every clue focuses on measuring precisely and determining how much or how long, rather than finding differences between values. If the formula had been taken from Subtraction Alley, you would expect to see clues involving taking away, decreasing amounts, or solving for what remains after something is removed. But that’s not what you’re seeing here. You can eliminate Subtraction Alley from your list—it’s not where the formula was taken from.
You scan the Division Den carefully, eyes moving from one surface to the next. Something doesn’t add up. There are no measuring tools here—no rulers, no scales, nothing that suggests lengths, weights, or units were involved. You pause, thinking back to the workshop. Everything there had been perfectly arranged… untouched. No signs of use, no disruption—just order. Whoever took the formula didn’t need to measure anything. The realization settles in. The Measurement Workshop can be crossed off your list. Click Here!
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As you examine the clues in the Fraction Lab, the evidence focuses on parts of a whole—comparing fractions, combining pieces, and understanding relationships between portions. Everything here is about how parts fit together, not how numbers are split into equal groups. Dr. Division is known for breaking things apart into equal shares, but that’s not what these clues show. Instead, the work highlights building and analyzing fractions, not dividing quantities. The approach doesn’t match his methods. You can eliminate Dr. Division—he is not responsible for the theft.
As you study the clues in the Geometry Gallery, the focus is clear—shapes, angles, lines, and how figures are connected in space. Every piece of evidence points to visual reasoning and understanding how parts fit together, not repeated addition or scaling numbers. Multiplication Hall is all about groups and patterns of numbers, but none of those strategies appear here. Instead, the clues rely on identifying figures and analyzing their relationships. The methods don’t match. You can eliminate Multiplication Hall from your list—it’s not where the formula was taken from.
You carefully fill in the missing words, and as the final blank is completed, the paper hums softly in your hands. The letters begin to shift… then lock into place. A hidden message appears at the bottom of the page: “The numbers were never hidden there… you’ve been looking in the wrong place.” You pause. The Number Vault—once thought to be a key location—suddenly doesn’t add up anymore. There’s no evidence left behind, no trail, no connection to the stolen formula. You lean back, thinking it through. You can officially eliminate the Number Vault from your list of possible locations. One less room. One step closer to the truth. (Click to Continue)
Excellent detective work! You carefully analyzed the clues, double-checked the evidence, and made smart mathematical connections—and it paid off. When you examined the situation closely, you realized that Detective Factor’s methods don’t match what was needed to solve this part of the mystery. The evidence shows that his approach doesn’t fit the problem, and his tools wouldn’t lead to the correct solution. Because of your strong reasoning and attention to detail… Detective Factor can officially be crossed off the suspect list! You’re one step closer to cracking the case. Stay sharp, trust your thinking, and keep following the clues—the truth is getting closer! Click Here
The screen fades to black… then flashes back on.A new report appears—clean, precise… almost untouched.You step closer.“No digital records.”“No stored calculations.”“No evidence of electronic use.”An image of a calculator flickers onto the screen… then a bold red mark slashes across it.You scan the room again. No key presses. No shortcuts. No easy way out.Whoever did this… did it all by hand.A final message types across the display:“The calculator was never used.”You nod, piecing it together.The calculator can be eliminated. Cross it off your list. Click Here
No clipboard at the scene. Not a single note, not a scribble, not even a torn scrap of paper. Whoever pulled this job didn’t write a thing down. If a tool is used for recording or writing… cross it off your list. Click Here to Continue
The next drawer slides open slower than the others… almost hesitant. Inside is a personnel file—stamped and sealed.You flip it open. Professor Product. Every movement. Every calculation. Every location—accounted for. A final note is paperclipped to the report: “Verified presence in Multiplication Hall during the incident.” “Multiple witnesses confirm—never left the room.”You scan the timestamps again. They’re airtight. Too clean to argue. You lean back, thinking it through. If Professor Product never left… then he couldn’t have hidden the formula. A bold red stamp marks the bottom of the page: CLEARED. Professor Product is no longer a suspect. Cross him off your list. Click Here To Continue
As you sort through the number logs in the Addition Office, something doesn’t add up—at least, not in the way Miss Multiply would expect. Every clue here relies on combining values step-by-step, not grouping or scaling them. Miss Multiply is known for efficiency and shortcuts through multiplication, but this work shows careful, deliberate addition with no sign of her usual methods. The calculations don’t match her style. Miss Multiply can be crossed off the list—she’s not your culprit. Click Here
As you investigate the Measurement Workshop, the clues point clearly to units, lengths, and precise comparisons. Everything here is about measuring carefully—checking sizes, distances, and amounts with accuracy. A beaker is used for mixing and holding liquids in experiments, but none of the evidence shows any signs of pouring, combining substances, or scientific testing. The work here is focused on measurement, not experimentation. The tool doesn’t match the task. You can eliminate the beaker—it was not used in the theft.
As you work your way through Subtraction Alley, carefully finding the differences between each clue, something becomes clear. The work here requires breaking numbers apart and tracking what remains—not zooming in or examining fine details. A magnifying glass would help someone look closer, but none of the evidence here needed that kind of tool. Every clue was solved through calculation and reasoning, not observation. The method doesn’t match the tool. You can eliminate the magnifying glass—it was not used in the theft.
As you review all the clues you’ve gathered so far, something stands out. None of the evidence points to dividing numbers into equal groups or sharing values evenly—the key ideas behind Division Den. Instead, every clue has focused on combining, comparing, or finding differences, not splitting into parts. If the formula had been taken from Division Den, you would expect to see clear signs of division strategies. But those clues are missing. You can eliminate Division Den from your list—it’s not where the formula was taken from.