Addition and Subtraction (within 20)

Addition +

100

1 + 1 =

1 + 1 = 2

200

3 + 4 =

 3 + 4 = 7

300

5 + 5 =

5 + 5 = 10

400

4 + 4 =

4 + 4 = 8

500

7 + 2 =

7 + 2 = 9

Addition +

100

12 + 0 =

12 + 0 = 12

200

3 + 2 =

3 + 2 =

300

6 + 3 =

6 + 3 = 9

400

6 + 6 =

6 + 6 = 12

500

7 + 7 =

7 + 7 = 14

Subtraction -

100

2 - 1 =

2 - 1 = 1

200

4 - 2 =

4 - 2 = 2

300

6 - 1 =

6 - 1 = 5

400

10 - 3 =

10 - 3 = 7

500

9 - 8 =

9 - 8 = 1

Subtraction -

100

5 - 3 = 

5 - 3 = 2

200

8 - 4 =

8 - 4 = 4

300

3 - 0 =

3 - 0 = 3

400

1 - 1 =

1 - 1 = 0

500

11 - 4 =

11 - 4 = 7