For questions 1-2, estimate the sum or difference. Use the benchmarks, 0, 1/2, and 1.
1. 23/40 - 11/30
A) 0
B) 1
C) 1/2
2. Simone measures the width of one cardboard strip as 1/2 yd. A second cardboard strip measures 5/6 yd in width. Estimate the combined width of the cardboard strips.
A) about 1/2 yd
B) about 1 yd
C) about 1 1/4
D) about 1 1/2
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