Answer
Estimate: $50$
Exact: $49\frac{5}{10}$
Work Step by Step
Estimate: round the three numbers to 5, 2, and 5 and multiply.
Exact: change the numbers into improper fractions: $\frac{9}{2}, \frac{11}{5}, \frac{5}{1}$
Multiply: $\frac{9}{2}\times\frac{11}{5} = \frac{99}{10}$
$\frac{99}{10}\times\frac{5}{1} = \frac{495}{10}$
Change into a mixed (or whole) number: $49\frac{5}{10}$
