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Published byLucas Gray Modified over 3 years ago

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6.4 Adding and Subtracting Mixed Numbers

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Adding Mixed Numbers Find the sum. 1 4949 + 3 1919 1.Rewrite the fraction using LCD if denominators are different. 2. Add or subtract the fractions, then the whole numbers. 3. Simplify if possible. 4 5959 In this problem, the denominators are the same, so begin with step 2.

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Lets Do More Examples! Find the sum. 1 4949 3 1313 + = 9 3 X 3 4 7979 4 7878 5 1414 + = 8 2 X 2 9 9898 = 1 1818 10 1818 Add the whole numbers.

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Subtracting Mixed Numbers 1 Find the Difference. 17 20 - 1 3535 = X 4 12 5 20 = 1414 3 3434 - 1 1 6 = 24 X 6 18 14 24 = X 4 4 = 7 12 10 7878 4 1818 6 8 = 3434 - 1818 2 6 2 7 12 6 3434

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Now You Try! Find the sum or difference. 3 3535 + 7 9 10 4 5656 - 1 1 12 = 10 X 2 6 10 15 10 =1 5 10 = 1212 11 1212 = 12 10 9 12 3= 3 4 3 3 4

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