Question

Explain to Jimmy how estimating first can help him determine if his answer is reasonable his answer was 384 is at a reasonable answer for 48 × 26 why or why not

Answer 1

Real answer
48
*26
------
1,248


Estimate
50
*25
------
1,250

So the answer is..
Estimating is helpful because it makes sure you answered correctly. No, this answer is incorrect and if he had done the estimate he could have seen how he was wrong.