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