Question

Perform the indicated operation. then estimate to see whether the proposed results is reasonable. 11.58 + 11.9 + 9.2

32.68
22.68
33.68
31.68 Preform the indicated operation. Then estimate to see whether the proposed result is reasonable.
93.8 - 6.48
87.32
97.44
87.42
94.34
Preform the indicated operation. Then choose the best answer. 27.7 x 1.9 5.363
52.63
53.62
5.263 Choose the best estimate. 64.1 ÷ 97
641
6.41
0.641
6410 Use estimation to determine whether the result is reasonable or not. 108.93 x 32.6 Result: 355.112 Is it reasonable or not?

Answer 1

Answers: See below

These problems are best done by rounding to easy numbers, then picking the closest value. Below I gave an example of how to round them and then picked the best answer.

1) 12 + 12 + 10 = 34 So 33.68 is the closest.

2) 94 - 6 = 88 So 87.42 is the closest.

3) 28 x 2 = 56 So 53.62 is the closest.

4) 60 / 100 = 0.6 So 0.641 is the closest.

5) 100 x 30 = 3000 So 355.12 is not reasonable.