Subtracting Two Digit Numbers without Renaming

How to subtract two-digit numbers (for example 67 - 45).

  • Place one number above the other so the tens' place digits and ones' place digits are lined up. Draw a line under the bottom number.
  • 67
    45
    
  • Subtract the bottom ones' place digit (5) from the top ones' place digit (7) and place the difference (2) below the line in the ones' place column.
  • 67
    45
     2
    
  • Subtract the bottom tens' place digit (4) from the top tens' place digit (6). Place the difference (2) below the line in the tens' place column.
  • 67
    45
    22

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Find the Difference Between the two Numbers.

  -     =     
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