1. 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 2
= 1 7 8
Subtract
4-3

2. 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

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