Question

Jerry multiplied 3.04*7.091 and got the product 2.155664.is his answer reasonable?why or why not

Answer 1

No. Jerry's answer is not reasonable.

If he were only multiplying the whole numbers without the decimal parts,
he would have (3 * 7) = 21.

Since each factor is slightly bigger than the whole-number part, the answer
must be slightly bigger than 21. His answer of 2.1- - - can't be correct.

Answer 2

His answer is not reasonable because the decimal is misplaced. The actually answer is 21.5564, all he did was move the decimal place over.