Basic College Mathematics (9th Edition)

Published by Pearson

Chapter 1 - Whole Numbers - 1.2 Adding Whole Numbers - 1.2 Exercises: 48

12389

Work Step by Step

Step 1: Add the digits in one’s column Sum of the ones column 2+9+1+7= 19. Write 9 ones in the ones column and write 1 tens in the tens column. 1 4 0 2 2 7 0 9 8 6 2 1 + 3 7 ------- 9 Step 2: Add the digits in the tens column, including the regrouped 1. Sum of the tens column 1+2+2+3=8. Write 8 tens in the tens column. 1 4 0 2 2 7 0 9 8 6 2 1 + 3 7 ------- 8 9 Step 3: Add the digits in the hundreds column. Sum of the hundreds column 0+7+6=13. Write 3 hundreds in the hundreds column. 1 1 4 0 2 2 7 0 9 8 6 2 1 + 3 7 -------- 3 8 9 Step 4: Add the digits in the thousands column. Sum of the thousands column 1+4+8=13. Write 3 thousands in the thousands column and 1 in the ten thousand column. 1 1 4 0 2 2 7 0 9 8 6 2 1 + 3 7 ------------ 1 2 3 8 9

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