Is this a fact family?
Is this a fact family?
4, 3, 9
No, it isn't. 4+3=7 not 9
How could you make it a fact family?
Write another equation in this fact family.
1+7=8
7+1 = 8
8-7 = 1
8-1 = 7
If 3+2=5, then 5-3=
2
What is the missing fact family?
5 + 3 = 8
3 + 5 = 8
8 - 5 = 3
8 - 3 = 5
Is this a fact family?
2, 8, 5
No, it isn't. 2+5=7 not 8
How could you make it a fact family?
Write another equation in this fact family.
5+4=9
4+9 = 5
9-4 = 5
9-5 = 4
If 6+4=10, then 10-4=
6
What is the missing fact family?
2 + 7 = 9
9 - 7 = 2
9 - 2 = 7
7 + 2 = 9
Is this a fact family?
4, 3, 1
Yes it is.
3+1=4 and 1+3=4
4-3=1 and 4-1=3
Write another equation in this fact family.
10-3=7
10 - 7 = 3
7+3 = 10
3+7 = 10
If 12-2=10, then 2+10=
12
What is the missing fact family?
7 + 4 = 11
11 - 4 = 7
11 - 7 = 4
4 + 7 = 11
Is this a fact family?
10, 4, 6
Yes, it is.
4+6=10 and 6+4=10
10-6=4 and 10-4=6
Write another equation in this fact family.
14-3=11
14 - 11 = 3
11+3 = 14
3+11 = 14
If 16-3=13, then 3+13=
16
What is the missing fact family?
6 + 6 = 12
6 + 6 = 12
12 - 6 = 6
12 - 6 = 6
Is this a fact family?
12, 9, 4
No, it isn't 9+4=13 not 12.
How could you make it a fact family? BONUS
Write another equation in this fact family.
15-9=6
15 - 6 = 9
9+6 = 15
6+9 = 15
If 21-7=14, then 7+14=
21
What is the missing fact family?
9 + 16 = 25
16 + 9 = 25
25 - 9 = 16
25 - 16 = 9