Basic College Mathematics (9th Edition)

Published by Pearson

Chapter 1 - Whole Numbers - 1.2 Adding Whole Numbers - 1.2 Exercises: 59

1 2 2 6 8

Work Step by Step

Step 1: Add the digits in one’s column Sum of the ones column 3+5+9+2+1+8 = 28. Write 8 ones in the ones column and write 2 tens in the tens column. 2 4 1 3 8 5 9 9 1 9 6 0 2 3 1 + 1 2 1 8 8 Step 2: Add the digits in the tens column, including the regrouped 2. Sum of the tens column 2+1+8+1+0+3+1=16. Write 6 in the tens column and write 1 in the hundred’s column. 1 2 4 1 3 8 5 9 9 1 9 6 0 2 3 1 + 1 2 1 8 6 8 Step 3: Add the digits in the hundreds column, including the regrouped 1. Sum of the hundreds column 1+4+9+6+2=22. Write 2 in the hundreds column and 2 in thousand’s column. 2 1 2 4 1 3 8 5 9 9 1 9 6 0 2 3 1 + 1 2 1 8 2 6 8 Step 4: Add the digits in the thousands column, including the regrouped 1 Sum of the thousands column 2+9+1=12. Write 2 in the thousands column and 1 in the ten thousand column. 2 1 2 4 1 3 8 5 9 9 1 9 6 0 2 3 1 + 1 2 1 8 1 2 2 6 8

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