Question

What digit is in the

Answer 1

First, we have to round each number to the nearest ten.

`\begin{gathered} 67\approx70 \\ 42\approx40 \\ 19\approx20 \\ 23\approx20 \end{gathered}`

Then, we add all the rounded numbers.

`70+40+20+20=150`

Therefore, an estimated sum is 150.