## Basic College Mathematics (9th Edition)

Estimate: 16$\div$3= $5\frac{1}{3}$ Exact : $5\frac{1}{6}$
$15\frac{1}{2}\div3$ = $15\frac{1}{2}\div\frac{3}{1}$ First we need to find Estimate: $15\frac{1}{2}$ rounded to 16 $\frac{3}{1}$ rounded to 3 16$\div$3= $5\frac{1}{3}$(Estimate) Now we need to find Exact: $15\frac{1}{2}\div3$ = $\frac{31}{2}\div\frac{3}{1}$ = $\frac{31}{2}\times\frac{1}{3}$ = $\frac{31\times1}{2\times3}$ = $\frac{31}{6}$ = $5\frac{1}{6}$