Fractions, Decimals and Percents

What is a percent??? Percent : A ratio of a number to 100. The symbol % is used to indicate that a number is a percent . Example : 40% is the ratio 40 to 100, or 40 100 Percents can be written as fractions or decimals

Writing Percents as Fractions Pearson Prentice Hall Mathematics Video Write 35% as a fraction in simplest form. 35% = 35 100 = 7 20 Write the percent as a fraction with a denominator of 100 Simplify

Writing Percents as Fractions Write 88% as a fraction 88% = 88 100 = 22 25 Write the percent as a fraction with a denominator of 100 Simplify

Your Turn… Write 2% as a fraction

Your Turn Write 45% as a fraction

Writing Percents as Decimals Pearson Prentice Hall Mathematics Video Write 43% as a decimal. 43% = 43 100 = 0.43 43% = 43. = 0.43 Write the percent as a fraction with a denominator of 100. Write the fraction as a decimal All you have to do is move the decimal to the LEFT 2 times!

Writing Percents as Decimals Write 105% as a decimal. 105% = 105 100 = 1.05 105% = 105. = 1.05 Write the percent as a fraction with a denominator of 100. Write the fraction as a decimal All you have to do is move the decimal to the LEFT 2 times!

Your Turn… Write 16% as a decimal

Your Turn… Write 104% as a decimal

Writing Decimals as Percents Pearson Prentice Hall Mathematics Video Write 0.07 as a percent. 0.07 = 7 100 = 7% 0.07 = 0.07 = 7% Write the decimal as a fraction Write the fraction as a percent All you have to do is move the decimal to the RIGHT 2 times!

Writing Decimals as Percents Write 0.038 as a percent. 0.038 = 38 1000 = 3.8% 0.038 = 0.038 = 3.8% Write the decimal as a fraction Write the fraction as a percent All you have to do is move the decimal to the RIGHT 2 times!

Your Turn Write 0.57 as a percent

Your Turn Write 0.2 as a percent

Writing Fractions as Percents Pearson Prentice Hall Mathematics Video Write 4 as a percent 5 4 = 4 • 20 5 5 • 20 = 80 100 = 80% Write an equivalent fraction with a denominator of 100. Write the fraction as a percent

Writing Fractions as Percents Write 3 as a percent 8 3 = 3 ÷ 8 = 0.375 = 37.5% Use division to write the fraction Write the decimal as a percent

Your Turn… Write 3 as a fraction 10

Your Turn… Write 11 as a fraction 40