Percents Decimals and Fractions 1 2 21 1

Percents, Decimals, and Fractions

1 2 21 1 ÷ 2 These all mean the same thing.

To change a fraction into a decimal… Divide the numerator (top number) by the denominator (bottom number) 1 21 2

To change a fraction into a decimal… Add a decimal and zero 1 2 2 1. 0

To change a fraction into a decimal… Move the decimal straight up 1 2 . 2 1. 0

To change a fraction into a decimal… Now just divide 1 2 . 2 1. 0

To change a fraction into a decimal… And the answer is… 1 = 0. 5 2

To change a decimal into a fraction… (You have to know place value!) Change 0. 8 to a fraction in lowest terms Read it: 0. 8 (eight tenths) 8 Write it: 10 4 Reduce it: 5

To change a decimal into a fraction… (You have to know place value!) Change 0. 09 to a fraction in lowest terms Read it: 0. 09 (nine hundredths) Write it: Reduce 9 100 9 it: 100 (already in lowest terms)

To change a decimal into a percent… Change 0. 09 to a percent Multiply by 100 and add a % sign 9%

To change a decimal into a percent… Change 0. 09 to a percent HINT! 0. 09 HINT! The easiest way to multiply by 100 is to move the decimal 2 places to the right. Answer: 9%

To change a decimal into a percent… Change 0. 45 to a percent HINT! 0. 45 HINT! Answer: 45%

Fraction Decimal 1 2 = 0. 5 = Percent 50%

Fraction Decimal 1 = 0. 25 = 4 Percent 25%

Fraction Decimal 3 = 0. 75 = 4 Percent 75%

Fraction Decimal 3 = 10 0. 3 = Percent 30%

Fraction Decimal 3 = 0. 03 = 100 Percent 3%