Mental Math

How quickly can you add and subtract these numbers in your head?

As math gets harder, you will need to focus on the new things you learn. You should be able to do basic math in your head quickly. See how long it takes you to do these addition and subtraction facts. Click each problem to reveal the answer.

Problem		Answer
2 + 2	=	4
7 + 2	=	9
10 - 4	=	6
8 - 3	=	5
1 + 3	=	4
5 - 4	=	1
6 + 4	=	10
4 - 2	=	2
5 + 2	=	7
6 - 2	=	4
6 - 3	=	3
7 - 4	=	3
2 + 2	=	4
3 + 5	=	8
9 - 7	=	2
6 + 3	=	9
8 - 5	=	3
5 + 5	=	10
7 - 3	=	4
4 + 4	=	8