Question Estimate the product of $31.2$ and $2.6$ using front-end rounding, then calculate the exact answer.

Studdy Solution
Add the numbers to find the exact product.
$$\begin{array}{r} \phantom{0}5.2 \\ +78\phantom{.0} \\ \hline 81.2 \\ \end{array}$$
The exact product of $31.2$ and $2.6$ is $81.2$.
The estimated product using front end rounding is $90$, and the exact product is $81.2$.