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Subtract 3-Digit Numbers: Learn

How to subtract two-digit numbers (for example 658 - 472).
  • Place one number above the other so that the hundreds', tens' and ones' places are lined up. Draw a line under the bottom number.
    6 5 8
    - 4 7 2
  • Subtract the digits in the ones' place column (8 - 2 = 6) and place the answer below the line in the ones' place column.
    6 5 8
    - 4 7 2
    6
  • Subtract the numbers in the tens' place column (5 - 7 = ?). Since 7 is larger than 5, borrow one from the hundreds' place to make the top value larger than the bottom value. After this is done, subtract (15 - 7 = 8) and place the 8 below the line in the tens' place column.
    5 15
    6 5 8
    - 4 7 2
    8 6
  • Subtract the digits in the hundreds' place column (5 - 4 = 1) and place the answer below the line in the hundreds' place column.
    5 15
    6 5 8
    - 4 7 2
    1 8 6

Subtract with Paper and Pencil: Practice

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