Question

Choose Yes or No to tell if the estimate is reasonable for the solution of this problem: k=7×9; 481−k.

Answer 1

[AI-generated answer — Bot]

Yes.

We can simplify k=7×9 to k=63.

Then, we can estimate 481−k as 481-60=421.

The exact solution is 481-63=418, which is close enough to the estimated answer. Therefore, the estimate is reasonable.