Add With Pencil and Paper

Adding 2-Digit Numbers: Learn

How to add two-digit numbers (for example 29 + 33).
  • Place one number above the other number so that the tens' place digits and ones' place digits are lined up. Draw a line under the bottom number.
    2 9
    + 3 3
  • Add the ones' place digits (9 + 3 = 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
    2 9
    + 3 3
    2
  • Add the tens' place digits (1 + 2 + 3 = 6) and place the answer below the line in the tens' place column.
    1
    2 9
    + 3 3
    6 2

Add with Mental Math: Practice

What is the Sum of the two Numbers?

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