Without actually calculating, mentally round, multiply, and choose the best estimate. 1. 2872 12 = a.
Question:
1. 2872 × 12 =
a. 2872
b. 28,720
c. 287,200
d. 2,872,000
2. 706 × 409 =
a. 280
b. 2800
c. 28,000
d. 280,000
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