5. Add and Subtract Mixed Numbers
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Begin by rounding the mixed numbers.
1 * 9 ≈ 9
Before we will make an estimate, we will round 5 14 and 8 1415. 1 111 * 8 1415 ≈ 1 * 9 Next, we will use the rounded number to make an estimate. 1 111 * 8 1415 ≈ 1 * 9 ≈ 9