Prealgebra (7th Edition)

Published by Pearson
ISBN 10: 0321955048
ISBN 13: 978-0-32195-504-3

Chapter 4 - Section 4.7 - Operations on Mixed Numbers - Practice: 4

Answer

$8\frac{4}{5}$

Work Step by Step

$3\frac{1}{5}\times2\frac{3}{4}$ $=\frac{16}{5}\times\frac{11}{4}$ $=\frac{4}{5}\times\frac{11}{1}$ $=\frac{44}{5}$ $=8\frac{4}{5}$ Check by estimating: $3\frac{1}{5}\times2\frac{3}{4}$ Round the fractions for a quick estimation. $3\times3=9$ $9\approx8\frac{4}{5}$ This estimate is close to the exact value, so our answer is reasonable.
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