To find the best estimate of 61.4 + 88.3 we need to round 61.4 and 88.3 as:
[tex]\begin{gathered} 61.4\approx61 \\ 88.3\approx88 \end{gathered}[/tex]Then, if we sum 61 and 88, we get:
61 + 88 = 149
So, 149 is closest to 150. Therefore, the best estimate of 61.4 + 88.3 is 150
Answer: C. 150
