What we know about fact families

1. a fact familily song

2. 3-2=1

3. 3-1=2

4. 2+1=3

5. some are subtraction problems

6. 1+2=3

7. we need to know fact families because they help us make connections between adding and subtracting

8. If you cant use all 3 numbers for add and subtract it is not a fact family

9. Example of a fact family

10. 2 addition facts

10.1. 2 subtraction facts

11. when subtracting you use the bigger number and take away a smaller number then swap the smaller numbers

12. 3 members in a fact family

13. can be addition problems

14. fact families use the same 3 numbers

15. a game we can play

15.1. The first 2 numbers swap in an addition fact family but the answer is the same

16. you get 4 facts in all, when you get 4 facts you are done