225x Filetype PPT File size 1.41 MB Source: msubillings.edu
Adding Fractions Adding Fractions with the Same Denominator • Add the numerators. • Keep the same denominator • Simplify. 24246 2 9 9 9 9 3 Adding Fractions To add fractions with different denominators: 1. Write each fraction as an equivalent fraction with the LCD. 2. Add the numerators and keep the LCD. 3. Simplify. 1 1 1 4 1(3) 3 4 34 4(3) LCD: 12 4 3 12 12 7 12 Adding Fractions 3∙ 4 3 ∙ 1 12 3 5∙ 4 20∙ 1 20 20 15 LCD: 20 20 3 4 Adding Fractions ∙ 2 ∙ 3 2 5 4 15 9 6 18 18 ∙ 2 ∙ 3 LCD: 18 19 18 Adding Fractions 7∙ 5 5∙ 3 35 15 18 30 90 90 ∙ 5 ∙ 3 LCD: 18 = 2∙3∙3 50 30 = 2∙3∙5 90 LCD = 2 ∙3 ∙3 ∙5 5 = 90 9
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