Grade 1: Missing addend - sums with 13
The number of all possible operations is equal to 28
Solve.

________ + 2 = 13

________ + 13 = 13

________ + 0 = 13

________ + 5 = 13

________ + 3 = 13

________ + 11 = 13

________ + 10 = 13

________ + 9 = 13

________ + 4 = 13

________ + 12 = 13

________ + 6 = 13

________ + 7 = 13

________ + 8 = 13

________ + 1 = 13

5 + ________ = 13

4 + ________ = 13

8 + ________ = 13

1 + ________ = 13

13 + ________ = 13

11 + ________ = 13

9 + ________ = 13

7 + ________ = 13

0 + ________ = 13

2 + ________ = 13

10 + ________ = 13

6 + ________ = 13

12 + ________ = 13

3 + ________ = 13




Grade 1: Missing addend - sums with 13
The number of all possible operations is equal to 28
The Answer.

11 + 2 = 13

0 + 13 = 13

13 + 0 = 13

8 + 5 = 13

10 + 3 = 13

2 + 11 = 13

3 + 10 = 13

4 + 9 = 13

9 + 4 = 13

1 + 12 = 13

7 + 6 = 13

6 + 7 = 13

5 + 8 = 13

12 + 1 = 13

5 + 8 = 13

4 + 9 = 13

8 + 5 = 13

1 + 12 = 13

13 + 0 = 13

11 + 2 = 13

9 + 4 = 13

7 + 6 = 13

0 + 13 = 13

2 + 11 = 13

10 + 3 = 13

6 + 7 = 13

12 + 1 = 13

3 + 10 = 13