Fractions, Decimals, and Percentage

Know how to express parts of a whole in different ways! Learn how fractions, decimals, and percentages relate to each other. 

– represents the ratio of the number of parts to a whole – used to express portion of foods and describe time (half hour, quarter hour)

Fractions

1 4

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numerator

denominator

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– a way to express fractions whose denominator are powers of 10. – can be seen on currencies, and measuring device

Decimals 

decimal point 

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0.25

– describes the ratio of a part to a hundred – often used in telling discounts, and phone battery statu

Percentage 

percent sign 

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25%

Fractions        Decimal        Percentage

How to rewrite fractions, decimals, and percentages 

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[ Divide numerator by denominator ]

[ Multiply by 100, put % ]

2 5

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0.4

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40%

[ 2÷5 ]

[ 0.4 x 100 ]

   Percentage     Decimal        Fractions  

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[ Divide by 100, remove the % ]

[ Put the number on the numerator and a power of 10 on the denominator , then simplify ] 

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0.65

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[ 65 ÷ 100 ]

Tip: Count the decimal places. that will be the number of zeroes here!

13 20

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65%

65 100

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Thank you

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