Prealgebra (7th Edition)

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

Chapter 1 - Review: 18

Answer

$819+21=840$

Work Step by Step

Working left to right, add the corresponding digits in each place value. $\ \ \ 819$ $\ \ \underline{+21}$ Add the ones position $8+1=10$ Carry over the digit in the tens place. Add the tens position $1+2+1=4$ Add the hundreds position $8+0=8$ Write the result of each addition step in its proper position for its place value.
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