Add 2-Digit Numbers Vertically

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

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Game Name	Description	Best Score
	How many correct answers can you get in 60 seconds?	0
	Extra time is awarded for each correct answer. Play longer by getting more correct.	0
	How fast can you get 20 more correct answers than wrong answers?	999