Fact Families

1. Fact Families
By Monica Yuskaitis

2. Definitions
wAddend - Any number being added.
6 + 5 = 11
wInverse Operation - An opposite
operation that undoes another.
5 + 4 = 9 9 - 5 = 4

3. Addition/Subtraction Fact
Families are found by:
wStarting with a simple addition fact.
( 2 + 5 = 7)
wChanging the addends around.
(5 + 2 = 7)
wWriting the Inverse operations for
both.
(7 - 2 = 5 & 7 - 5 = 2)

4. What are the 4 members of the
Fact Family of
3 + 4 = 7?
w3 + 4 = 7
w4 + 3 = 7
w7 - 3 = 4
w7 - 4 = 3

5. What are the 4 members of the
Fact Family of
8 + 1 = 9?
w8 + 1 = 9
w1 + 8 = 9
w9 - 8 = 1
w9 - 1 = 8

6. What are the 4 members of the
Fact Family of
11 + 5 = 16?
w11 + 5 = 16
w5 + 11 = 16
w16 - 11 = 5
w16 - 5 = 11

7. What are the 4 members of the
Fact Family of
9 + 7 = 16?
w9 + 7 = 16
w7 + 9 = 16
w16 - 9 = 7
w16 - 7 = 9

8. What are the 4 members of the
Fact Family of
12 + 7 = 19?
w12 + 7 = 19
w7 + 12 = 19
w19 - 12 = 7
w19 - 7 = 12

9. Definitions
wFactors - The numbers being
multiplied.
4 x 8 = 32
wInverse Operation - An opposite
operation that undoes another.
4 x 8 = 32 32  4 = 8

10. Multiplication/Division Fact
Families are found by:
wStarting with a simple multiplication
fact. ( 3 x 9 = 27)
wChanging the factors around.
(9 x 3 = 27)
wWriting the Inverse operations for both.
(27  3 = 9 & 27  9 = 3)

11. What are the 4 members of the
Fact Family of
3 x 7 = 21?
w3 x 7 = 21
w7 x 3 = 21
w21  3 = 7
w21  7 = 3

12. What are the 4 members of the
Fact Family of
6 x 4 = 24?
w6 x 4 = 24
w4 x 6 = 24
w24  6 = 4
w24  4 = 6

13. What are the 4 members of the
Fact Family of
7 x 8 = 56?
w7 x 8 = 56
w8 x 7 = 56
w56  7 = 8
w56  8 = 7

14. What are the 4 members of the
Fact Family of
9 x 7 = 63?
w9 x 7 = 63
w7 x 9 = 63
w63  9 = 7
w63  7 = 9

15. What are the 4 members of the
Fact Family of
6 x 7 = 42?
w6 x 7 = 42
w7 x 6 = 42
w42  6 = 7
w42  7 = 6