Percents, Decimals, and Fractions. 1 ÷ 2 These all mean the same thing. 1 2 1 2.

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Presentation transcript:

Percents, Decimals, and Fractions

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)

To change a fraction into a decimal… Add a decimal and zero

To change a fraction into a decimal… Move the decimal straight up

To change a fraction into a decimal… Now just divide

To change a fraction into a decimal… And the answer is… =

To change a decimal into a fraction… (You have to know place value!) Read it: 0.8 (eight tenths) Write it: Reduce it: Change 0.8 to a fraction in lowest terms

To change a decimal into a fraction… (You have to know place value!) Read it: 0.09 (nine hundredths) Write it: Change 0.09 to a fraction in lowest terms Reduce it: (already in lowest terms)

To change a decimal into a percent… Multiply by 100 and add a % sign Change 0.09 to a percent 9%

To change a decimal into a percent… 0.09 Change 0.09 to a percent HINT! Answer: 9% The easiest way to multiply by 100 is to move the decimal 2 places to the right.

To change a decimal into a percent… 0.45 Change 0.45 to a percent HINT! Answer: 45%

0.550% == Fraction Decimal Percent 1 2

0.2525% == Fraction Decimal Percent 1 4

0.7575% == Fraction Decimal Percent 3 4

0.330% == Fraction Decimal Percent 3 10

0.033% == Fraction Decimal Percent 3 100