Basic College Mathematics (9th Edition)

Published by Pearson
ISBN 10: 0321825535
ISBN 13: 978-0-32182-553-7

Chapter 4 - Decimals - 4.4 Multiplying Decimal Numbers - 4.4 Exercises: 57

Answer

$(5.96)(10) = 59.6$ $(3.2)(10) = 32$ $(0.476)(10) = 4.76$ $(80.35)(10) = 803.5$ $(722.6)(10) = 7226$ $(0.9)(10) = 9$ The rule for multiplying by 10 is to shift the decimal one position to the right. The rule for multiplying by 100 is to shift the decimal two positions to the right. $(5.96)(100) = 596$ $(3.2)(100) = 320$ $(0.476)(100) = 47.6$ $(80.35)(100) = 8035$ $(722.6)(100) = 72260$ $(0.9)(100) = 90$ The rule for multiplying by 1000 is to shift the decimal three positions to the right. $(5.96)(1000) = 5960$ $(3.2)(1000) = 3200$ $(0.476)(1000) = 476$ $(80.35)(1000) = 80350$ $(722.6)(1000) = 722600$ $(0.9)(1000) = 900$

Work Step by Step

$0.\underrightarrow476\times10=4.76$ $0.\underrightarrow{47}\,6\times100=47.6$ $0.\underrightarrow{476}\times1000=476$
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