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Fractions And Decimals

Fractions, Decimals, and Percents Notes

Vocabulary

Numerator – Top number of a fraction or part of the whole.

Denominator – Bottom number of a fraction or the whole.

Fraction to Decimal

●To convert a fraction to a decimal - divide the numerator by the denominator. (top in, bottom out)



 .25



 .428

Decimal to Fraction

●To convert a decimal to a fraction - write it like you say it, then simplify, if needed.

.7  “seven tenths” 

4.28  “four and twenty eight hundredths”  4

= 4

100

Decimal to Percent

●To convert a decimal to a percent - move the decimal point two places to the RIGHT and add a percent sign.

Percent to Decimal

●To convert a percent to a decimal - move decimal point two places to the LEFT and remove the percent sign.

Percent to Fraction

●To convert a percent to a fraction - first convert to a decimal, and then convert the decimal to a fraction.

Percent to Decimal

Decimal to Fraction

Fraction to Percent

●To convert a fraction to a percent - first convert to a decimal, then convert the decimal to percent.

Fraction to Decimal

 37.5%

0.375

 Divide numerator by denominator 



Fractions And Decimals