There’s only one way to learn the addition tables and that is to memorize them. Start on the left and say the equations aloud. Think about the words as you say them. e.g. One plus one is two, two plus two is four, etc. Once you have them down it’s time to practice.

You can limit the largest number to 4, 6, 8, 10, or 13.

1 + 0 = 1

1 + 1 = 2

1 + 2 = 3

1 + 3 = 4

1 + 4 = 5

1 + 5 = 6

1 + 6 = 7

1 + 7 = 8

1 + 8 = 9

1 + 9 = 10

1 + 10 = 11

1 + 11 = 12

1 + 12 = 13

1 + 13 = 14

2 + 0 = 2

2 + 1 = 3

2 + 2 = 4

2 + 3 = 5

2 + 4 = 6

2 + 5 = 7

2 + 6 = 8

2 + 7 = 9

2 + 8 = 10

2 + 9 = 11

2 + 10 = 12

2 + 11 = 13

2 + 12 = 14

2 + 13 = 15

3 + 0 = 3

3 + 1 = 4

3 + 2 = 5

3 + 3 = 6

3 + 4 = 7

3 + 5 = 8

3 + 6 = 9

3 + 7 = 10

3 + 8 = 11

3 + 9 = 12

3 + 10 = 13

3 + 11 = 14

3 + 12 = 15

3 + 13 = 16

4 + 0 = 4

4 + 1 = 5

4 + 2 = 6

4 + 3 = 7

4 + 4 = 8

4 + 5 = 9

4 + 6 = 10

4 + 7 = 11

4 + 8 = 12

4 + 9 = 13

4 + 10 = 14

4 + 11 = 15

4 + 12 = 16

4 + 13 = 17

5 + 0 = 5

5 + 1 = 6

5 + 2 = 7

5 + 3 = 8

5 + 4 = 9

5 + 5 = 10

5 + 6 = 11

5 + 7 = 12

5 + 8 = 13

5 + 9 = 14

5 + 10 = 15

5 + 11 = 16

5 + 12 = 17

5 + 13 = 18

6 + 0 = 6

6 + 1 = 7

6 + 2 = 8

6 + 3 = 9

6 + 4 = 10

6 + 5 = 11

6 + 6 = 12

6 + 7 = 13

6 + 8 = 14

6 + 9 = 15

6 + 10 = 16

6 + 11 = 17

6 + 12 = 18

6 + 13 = 19

7 + 0 = 7

7 + 1 = 8

7 + 2 = 9

7 + 3 = 10

7 + 4 = 11

7 + 5 = 12

7 + 6 = 13

7 + 7 = 14

7 + 8 = 15

7 + 9 = 16

7 + 10 = 17

7 + 11 = 18

7 + 12 = 19

7 + 13 = 20

8 + 0 = 8

8 + 1 = 9

8 + 2 = 10

8 + 3 = 11

8 + 4 = 12

8 + 5 = 13

8 + 6 = 14

8 + 7 = 15

8 + 8 = 16

8 + 9 = 17

8 + 10 = 18

8 + 11 = 19

8 + 12 = 20

8 + 13 = 21

9 + 0 = 9

9 + 1 = 10

9 + 2 = 11

9 + 3 = 12

9 + 4 = 13

9 + 5 = 14

9 + 6 = 15

9 + 7 = 16

9 + 8 = 17

9 + 9 = 18

9 + 10 = 19

9 + 11 = 20

9 + 12 = 21

9 + 13 = 22

10 + 0 = 10

10 + 1 = 11

10 + 2 = 12

10 + 3 = 13

10 + 4 = 14

10 + 5 = 15

10 + 6 = 16

10 + 7 = 17

10 + 8 = 18

10 + 9 = 19

10 + 10 = 20

10 + 11 = 21

10 + 12 = 22

10 + 13 = 23

11 + 0 = 11

11 + 1 = 12

11 + 2 = 13

11 + 3 = 14

11 + 4 = 15

11 + 5 = 16

11 + 6 = 17

11 + 7 = 18

11 + 8 = 19

11 + 9 = 20

11 + 10 = 21

11 + 11 = 22

11 + 12 = 23

11 + 13 = 24

12 + 0 = 12

12 + 1 = 13

12 + 2 = 14

12 + 3 = 15

12 + 4 = 16

12 + 5 = 17

12 + 6 = 18

12 + 7 = 19

12 + 8 = 20

12 + 9 = 21

12 + 10 = 22

12 + 11 = 23

12 + 12 = 24

12 + 13 = 25

13 + 0 = 13

13 + 1 = 14

13 + 2 = 15

13 + 3 = 16

13 + 4 = 17

13 + 5 = 18

13 + 6 = 19

13 + 7 = 20

13 + 8 = 21

13 + 9 = 22

13 + 10 = 23

13 + 11 = 24

13 + 12 = 25

13 + 13 = 26