Chapter 8.2, Problem 24P

The distributive law $a(b-c)=ab-ac$ does not hold, in general, if the products are rounded off to a smaller number of digits. To show this in a specific case, take $\begin{array}{cc}a=0.22,& b=3.19,\end{array}$, and $c=2.17$. After each multiplication, round off the last digit.