Basic College Mathematics (9th Edition)

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

Chapter 1 - Whole Numbers - 1.2 Adding Whole Numbers - 1.2 Exercises: 84

Answer

$160 feet (ft) of gutters

Work Step by Step

To find the distance around the entire roof, we will add the four sides (48, 32, 48, 32) $48 + 32 + 48 + 32$ Start at the right of each number and add the ones digits $8 + 2 + 8 + 2= 20$ ones Regroup the $20$ ones as $2$ tens and $0$ ones Write the $0$ ones in the ones column. Write the $2$ ten in the tens column Add the tens column next including the regrouped $2$ $2 + 4 + 3 + 4 + 3 = 16$ tens Regroup the $16$ tens as $1$ hundred and $6$ tens Write the $6$ tens in the tens column. Write the $1$ hundred in the hundreds column Add the hundreds column next which is the regrouped $1$. Write the $1$ in the hundreds column $160$ The sum of the three numbers is $160$ The distance is $160$ feet (ft).
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