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Adding Two-Digit Numbers with Paper and Pencil

Adding Two-Digit Numbers with Paper and Pencil

How to add two two-digit numbers (for example 45 + 67) with paper and pencil.

  • Write one number above the other so that the tens' place digits and ones' place digits are lined up. Draw a line under the bottom number.
    45
    67
    
  • Add the ones' place digits. (5 + 7 = 12). This sum is a two-digit number so place a one above the tens' place column and place the two below the line in the ones' place column.
    1
    45
    67
     2
    
  • Add the numbers in the tens' place column (1 + 4 + 6 = 11) and place the answer below the line and to the left of the ones' place sum.
     1
     45
     67
    112

Find the Sum of the two Numbers.

  +     =     




2006-10-02 20:25:19
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