Adding Three 2-Digit Numbers

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Adding Three 2-Digit Numbers: Learn

How to add three 2-digit 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.
    4 5
    8 2
    + 6 7
  • 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
    4 5
    8 2
    + 6 7
    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
    4 5
    8 2
    + 6 7
    1 9 4

(If the sum of the ones' place digits is less than ten no number is placed above the tens' place column.)

Adding Two-Digit Numbers: Practice

What is the Sum of the three Numbers?

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