For the following, (i) use a calculator to add; and (ii) round the numbers to the nearest whole number and add to obtain an estimate of the true sum. $454.3$ $59.48$ $\begin{array} { r }
+95.962 \
\hline
\end{array}$

Question

For the following, (i) use a calculator to add; and (ii) round the numbers to the nearest whole number and add to obtain an estimate of the true sum. $454.3$ $59.48$ $\begin{array} { r } 
+95.962 \
\hline
\end{array}$

Quizplus · Accepted Answer

(i) The exact sum is 609.742. (ii) Rounding each number to the nearest whole number gives 454 + 59 + 96 = 609.

For the Following, (I) Use a Calculator to Add; and (Ii)