Use front-end rounding to round each number. Then, multiply the rounded numbers to get an estimated answer. Finally, find the exact answer.estimateexact?

A. Estimate: 210; exact: 17,773.875
B. Estimate: 2100; exact: 1777.3875
C. Estimate: 2110; exact: 1776.3875
D. Estimate: 210; exact: 177.73875


Answer: B

Mathematics

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