Prealgebra (7th Edition)

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

Chapter 1 - Section 1.4 - Rounding and Estimating - Practice: 6

Answer

80 miles

Work Step by Step

The map on p. 35 is a little hard to read, but the exact distances are $11+16+19+31=78$. Round to the nearest 10: $10+20+20+30=80$.
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