Fact Families and Related Facts
Write the related fact:
18 - 9 = _
_ + _ = _
9 + 9 = 18
What comes next in the pattern:
7 + 5 = 12
6 + 6 = 12
5 + 7 = 12
_ + _ = _
4 + 8 = 12
4 + 4 = _
8
Make a 10 to find the difference:
14 - 6
14 - _ - _
_ - _ = _
14 - 6
14 - 4 - 2
10 - 2 = 8
The second grade classes have ant farms. Mr. Rather's class has 10 ants. Mrs. Lee's class has 10 ants. How many ants do both classes have altogether?
Both classes have 10 ants altogether.
Write the related fact:
21 - 7 = _
_ + _ = _
15 + 7 = 21
What comes next in the pattern:
3 + 3 = 6
4 + 4 = 8
5 + 5 = 10
_ + _ = _
6 + 6 = 12
9 + 9 = _
18
Make a 10 to find the difference:
5 + 9
5 + _ + _
_ + _ = _
5 + 9
5 + 5 + 4
10 + 4 = 14
Vicki has 17 red stickers and 9 blue stickers. How many more red stickers than blue stickers does she have?
Vicki has 8 more red stickers.
Make a fact family for these 3 numbers:
9, 4, 5
4 + 5 = 9
5 + 4 = 9
9 - 5 = 4
9 - 4 = 5
What comes next in the pattern:
7 + 4 = 11
8 + 3 = 11
9 + 2 = 11
_ + _ = _
10 + 1 = 11
11 + 11 =
22
If ____ is added to 7, the answer will be 16.
9
Mac has 4 cats. He also has 4 fish and 1 dog. How many pets does Mac have?
Mac has 5 pets.
Make a fact family for these 3 numbers:
12, 8, 4
8 + 4 = 12
4 + 8 = 12
12 - 8 = 4
12 - 4 = 8
What comes next in the pattern:
10 + 3 = 13
8 + 5 = 13
6 + 7 = 13
_ + _ = _
4 + 9 = 13
9 + 8 = _
17
If ____ is added to 8, the answer will be 17.
9
Ryan has 17 beads. He gives 9 of them away. Then he finds 5 more beads. How many beads does Ryan have now?
Ryan has 13 beads now.
Make a fact family for these 3 numbers:
21, 15, 6
15 + 6 = 21
6 + 15 = 21
21 - 15 = 6
21 - 6 = 15
What comes next in the pattern:
17 + 7 = 24
20 + 6 = 26
23 + 5 = 28
_ + _ = _
21 + 3 = 24
12 + 11 = _
23
6 + __ = 18
12
Sam has 7 red circles. He has 7 more blue circles than red circles. How many blue circles does Sam have?
Sam has 14 blue circles.