Question

Estimate.45.86 + 54.14A.90B.99C.100D.110

Answer 1

We need to estimate the sum:

`45.86+54.14`

In order to do so, we first round each term to the nearest integer. Then we add them.

We have:

`\begin{gathered} 45.86\cong46\text{ (because 0.86>0.50)} \\ \\ 54.14\cong54\text{ (because 0.14<0.50)} \end{gathered}`

Then, we can estimate the sum to be:

`45.86+54.14\cong46+54=100`

Therefore, option C is correct.