Add/Sub Rationals
HS Math
Created on October 22, 2024
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Transcript
- find the sum or difference of rational numbers in simplest form
Objective
Add and Subtract Rational Numbers
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Equivalent Ratios
Joey and James each ordered a medium cheese pizza.Joey ate four-eighths of his pizza. James one-half of his pizza.Did one of them eat more than the other?
Equivalent Ratios
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Answer
Sarah spent four-sixths of an hour reading.Jamila read her book for eight-twelfths of an hour reading.Did one person read more than the other?
Equivalent Ratios
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Answer
Rewrite the fraction seven-ninths with a denominator of 54.
Equivalent Ratios
Equivalent Ratios
Common Denominators
To find a least common denominator: Step 1: Find the least common multiple between 4 and 6. Step 2: Rewrite the fractions with the LCM as a common denominator. Step 3: Add (or subtract) the parts of the whole.
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Answer
Fractions with different denominators are measurements in different units.Fractions cannot be added or subtracted until they have common denominators.
Least Common Denominator
Next
To find a least common denominator: Step 1: Find the least common multiple between 4 and 6. Step 2: Rewrite the fractions with the LCM as a common denominator.Step 3: Add (or subtract) the parts of the whole.
Answer
Fractions cannot be added or subtracted until they have common denominators.
Least Common Denominator
To find a least common denominator: Step 1: Find the least common multiple between 4 and 6. Step 2: Rewrite the fractions with the LCM as a common denominator.Step 3: Add (or subtract) the parts of the whole.
Fractions cannot be added or subtracted until they have common denominators.
Add and Subtract Rational Numbers
To find a least common denominator: Step 1: Find the least common multiple between 4 and 6. Step 2: Rewrite the fractions with the LCM as a common denominator.Step 3: Add (or subtract) the parts of the whole.
Remember - whole numbers are fractions with a denominator of 1.
Least Common Denominator
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