Math Fact Families

Here are the facts for each of the families.

 

Facts of 10

1+9, 2+8, 3+7, 4+6, 5+5

10-1, 10-2, 10-3, 10-4, 10-5, 10-6, 10-7, 10-8, 10-9

 

Facts of 11

2+9, 3+8, 4+7, 5+6

11-2, 11-3, 11-4, 11-5, 11-6, 11-7, 11-8, 11-9

 

Facts of 12

3+9, 4+8, 5+7, 6+6

12-3, 12-4, 12-5, 12-6, 12-7, 12-8, 12-9

 

Facts of 13

4+9, 5+8, 6+7

13-4, 13-5, 13-6, 13-7, 13-8, 13-9

 

Facts of 14

5+9, 6+8, 7+7

14-5, 14-6, 14-7, 14-8, 14-9

 

Facts of 15

6+9, 7+8

15-6, 15-7, 15-8, 15-9

 

Facts of 16

7+9, 8+8

16-7, 16-8, 16-9

 

Facts of 17

8+9

17-8, 17-9

 

Facts of 18

9+9

18-9