Find the sum or difference. Then simplify if possible.

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Presentation transcript:

Find the sum or difference. Then simplify if possible. Example 1 Adding and Subtracting Fractions Find the sum or difference. Then simplify if possible. 11 8 = 13 11 – + 8 a. – + 13 13 13 3 – = 13 3 – =

Find the sum or difference. Then simplify if possible. Example 1 Adding and Subtracting Fractions Find the sum or difference. Then simplify if possible. 17 13 = 20 17 – 13 b. – 20 20 20 4 = = 5 1

Example 2 7 6 5 – 7 2 3 What is the value of ? + 7 3 – 4 7 4 2 7 3 – 2 Multiple Choice Practice 7 6 5 – 7 2 3 What is the value of ? + 7 3 – 4 7 4 2 7 3 – 2 7 SOLUTION 7 6 5 – + 2 3 = Write mixed numbers in expanded form. 5 – + = 3 7 6 2 Commutative property

Example 2 4 = – 2 – 7 = 7 4 2 – ANSWER The correct answer is B. Multiple Choice Practice 4 = – 2 – Add integers and fractions. 7 = Write as a mixed number. 7 4 2 – ANSWER The correct answer is B.

Guided Practice 1. What is the value of – 3 1 2 ? ANSWER 1 – for Examples 1 and 2 1. What is the value of – 3 1 2 ? ANSWER 1 – 2. What is the value of + 5 4 2 – 1 ? ANSWER – 5 3