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 Home--maths--Third Grade--Add three 2-digit Numbers

Add three 2-digit Numbers

Adding Three Numbers

How to add three numbers (for example 45 + 82 + 67).

  • Place the numbers in a column so that the tens' place digits and ones' place digits are lined up. Draw a line under the bottom number.
    45
    82
    67
    
  • Add the three ones' place digits. (5 + 2 + 7 = 14). This sum is a two-digit number, so place a one above the tens' place column and place the four below the line in the ones' place column.
    1
    45
    82
    67
     4
    
  • Add the numbers in the tens' place column (1 + 4 + 8 + 6 = 19) and place the answer below the line and to the left of the ones' place sum
      1
      45
      82
      67
     194
  • If the sum of the ones' place digits is less than ten no number is placed above the tens' place column

Find the Sum of the three Numbers.

  =  




2006-10-17 16:02:05
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