Flip's Quick Pick: Add and Subtract Within 20
A free math game for 1st and 2nd grade. Facts such as 8 + 7 and 15 − 9.
How to play
Each problem has four answers. Tap the right one, or press 1 to 4. There are 10 problems in a round.
For example
15 − 9 = ?
The answer is 6, because 15 − 9 = 6.
Other levels
Printable practice
Worksheets with answer keys for the same grades, fresh every time you print.