Adding and Subtracting Mixed Numbers COURSE 2 LESSON 4-3 Find 6 – 4 . 1 4 3 8 1 4 3 8 – 6 – 4 , or 2 Estimate 6 3 8 The LCD is 8. – 4 = – 4 Write an equivalent fraction using the LCD, 8. 6 = 6 1 4 2 – 4 3 8 = 5 10 Rename: 6 = 5 + 1 = 5 + = 5 2 = 1 7 8 Subtract 4-3

Adding and Subtracting Mixed Numbers COURSE 2 LESSON 4-3 Adding and Subtracting Mixed Numbers (continued) Check for Reasonableness The answer, 1 , is close to the estimate, 2. The answer is reasonable. 7 8 4-3

Adding and Subtracting Mixed Numbers COURSE 2 LESSON 4-3 Find each sum or difference. 1. 8 – 4 2. 7 + 3 2 3 5 6 5 6 3 3 5 3 4 7 20 11 4-3