Question

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

The estimation to determine whether the result is reasonable or not. 108.93 x 355.112
Reasonable
Not reasonable

Answer 1

27.7*1.9=52.63 is second choice

64.1/97=0.66 best answer is 0.641

108.93*355.112= 38,682.35 reasonable to do mental math and think like 100*360 will give you an aprox answer