Question

Nadia evaluates 798x195 using a calculator and she says that the answer is 15 561. Without doing the actual calculation, use estimation to determine whether Nadia's answer is reasonable. (please guys I need your help!!! I need to hand this tomorrow!!).

Answer 1

Answer: It's reasonable!

Explanation:

798 rounds to 800 and 195 rounds to 200, 800*200= 160000. Both numbers are a bit less, so the answer of 15 561 makes sense. (And I did the math to check!)