Fractions, Decimals, and Percents

Decimals  Fraction  Percents Writing Decimals as Percents Method 1: 1.) 0.3 three-tenths 3 •10 30 10 •10 100 30% 2.) 0.43 forty-three hundredths 43 100 43% = =

Decimals  Fraction  Percents Writing Decimals as Percents Method 2: (For decimals that have more than two place values) 0.7431 Multiply by 100 0.7431 • 100 Moves the decimal 2 places to the right. 74.31 = 74.31%

Decimals  Fraction  Percents Writing fractions as percents Method 1: Write an equivalent fraction with a denominator of 100 4 • 20 80 5 • 20 100 80% If the fraction is over 100, that is the percent!

Decimals  Fraction  Percents Writing fractions as percents Method 2: Use division to write the fraction as a decimal. 3 8 Divide the num. by den. 0.375 8 3.000 0.375 • 100 = 37.5 = 37.5%

Examples Write each decimal as a percent and a fraction. 0.04 0.04 “four hundredths” 4 4% 100 Simplify: 4 1 100 25 0.04 = 4% = ÷4 ÷4 = 1 25

Examples Write each fraction as a percent and as a decimal. Round the decimal to the nearest hundredths, if necessary. 2 30 To find the decimal and percent…divide!