How to add two two-digit numbers (for example 29 + 33).
If the numbers are arranged vertically, they are in a format ready to be added.
29
33
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
29
33
2
Add the tens' place digits (1 + 2 + 3 = 6) and place the answer below the line in the tens' place column.
