Section 1.3 Addition and Subtraction of Whole Numbers and Perimeter 17 When a digit in the subtrahend (bottom number) is larger than the corresponding digit in the minuend (top number), we must “regroup” or borrow a value from the column to the left. In the ones column, we cannot take 4 away from 2. We will regroup by borrowing 1 ten from the minuend. Furthermore, 1 ten 10 ones. f We now have 12 ones in the minuend. 92 9 tens 2 ones 74 7 tens 4 ones 8 10 9 2 7 4 7 tens 4 ones 8 12 9 2 9 8 tens 2 ones 10 ones 9 8 tens 12 ones 7 4 7 tens 4 ones 1 8 1 ten 8 ones Answer 13. 17,078 Subtracting Whole Numbers with Borrowing Subtract and check the result with addition. Solution: 0 16 1 3 4, 6 1 6 5 3, 4 3 8 10 In the tens place, 3 is greater than 0. We borrow 1 hundred from the hundreds place. 8 5 0 16 1 3 4, 6 1 6 5 3, 4 3 8 7 8 10 13 4, 6 1 6 Check: ✓ 1 7 1 81,1 8 53,438 134,616 1 0 3 5 0 16 5 3, 4 3 8 8 1, 1 7 8 134,616 53,438 Example 7 In the ones place, 8 is greater than 6. We borrow 1 ten from the tens place. In the ten-thousands place, 5 is greater than 3. We borrow 1 hundred-thousand from the hundredthousands place. Skill Practice Subtract. Check by addition. 13. 23,126 6,048 TIP: The process of borrowing in subtraction is the reverse operation of carrying in addition.
miller_prealgebra_2e_ch1_3
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