PERCENTAGES QUIZ

Mathematics

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01 - percents

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percentages QUIZ %

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What is 20% of 500

► 100

► 50

► 250

1/5

What is 10% of 5

►2.5

►0.5

► 0.05

2/5

What is 5% of 100

► 5

► 10

► 20

3/5

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Stratagy and Formula #1

Percentage (in decimal form) * Number = Result This method can be used to find any percentage of a given number.

Examples of finding 10% of a number (Stratagy 1)

To find 5% of a number, follow the same steps: Convert 5% to a decimal by dividing it by 100: 5% = 5/100 = 0.05 (decimal form) Multiply the decimal (0.05) by the number you want to find the percentage of. For example, if you want to find 5% of 400, you would multiply 0.05 by 400: 0.05 * 400 = 20 So, 5% of 400 is 20.

Examples of finding 10% of a number (Stratagy 1)

Convert 10% to a decimal by dividing it by 100: 10% = 10/100 = 0.10 (decimal form) Multiply the decimal (0.10) by the number you want to find the percentage of. For example, if you want to find 10% of 300, you would multiply 0.10 by 300: 0.10 * 300 = 30 So, 10% of 300 is 30.

Examples of finding 20% of a number (Stratagy 1)

Convert the percentage to a decimal: Divide the percentage by 100. For example, if you want to find 20% of a number, you would convert 20% to 0.20. Multiply the decimal by the number you want to find the percentage of. For example, if you want to find 20% of 200, you would multiply 0.20 by 200. 0.20 * 200 = 40 So, 20% of 200 is 40

Content: Different ways of writing percents

To convert a percentage to a decimal, divide by 100. So 25% is 25/100, or 0.25. To convert a decimal to a percentage, multiply by 100 (just move the decimal point 2 places to the right). For example, 0.065 = 6.5% and 3.75 = 375%.

How to find 5%,10%, and 20%

5%

20%

10%

Move the decimal over one place to the left

Find 10% and then multipy by 2

Find 10% and then divide by 2

Percentages

Percentages in the world Where do we see Percents in the world? Who has the greatest population in the Continent?

65%

85%

Questions and practice

‘There are 25 packs of choclates in the store. There are 500 total packs of candy in the store. What percent of packs of choclate are in the store?

‘Step 1: Find 10% of 500

Step 2: Then divide the answer of 10% by 2

Answer : 5%

Find 20% of 200

• Step 1: Find 10%
• Step 2: Multiply the answer of 10% by 2

-Answer: 40

Challenge Question: Find 15% of 25

‘Step 1: Find 10% by moving the decimal over one place to the left

‘Step 2: Divide the answer of 10% by 2. To find 5%

‘Step 3: Add the answer to 5% and 10% together

Answer: 3.75

Video On Percentages

QUIZ

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LEVEL 1

OF 5

What is 15% of 1000?

150

100

300

LEVEL 2

OF 5

What is 10% of 0.34

3.4

0.0034

0.034