Add 10
___ + 10 = 14
4
___ + 9 = 11
2
2 + 2 = ___
4
Which Fact is Missing?
2 + 3 = 5
5 - 2 = 3
5 - 3 = 2
3 + 2 = 5
6 + 10 = 16
Adding 10
___ + 10 = 20
10
___ + 9 = 18
9
6 + 7 = ___
6 + 6 + 1
13 (Doubles +1)
Which Fact is Missing?
8 + 2 = 10
10 - 2 = 8
10 - 8 = 2
2 + 8 = 10
8 + 8 = 16
Doubles
10 + ___ = 16
6
9 + ___ = 10
1
8 + 9 = ____
9 + 9 - 1 = ___
17 (Doubles -1)
Which numbers are missing?
7 + 2 = ___
__ + 7 = 9
9 - ___ = 2
___ - 2 = 7
9, 2, 7, 9
9 + 6 = 15
Add 9
___ + ___ = 17
10 + 7 or 7 + 10
___ + ___ = 13
9 + 4 or 4 + 9
11 + 11 = ___
22
Which numbers are missing?
9 + 3 = ___
__ + 9 = 12
12 - ___ = 3
___ - 3 = 9
12, 3, 9, 12
6 + 7 = 13
6 + 6 +1
Doubles + 1
___ + ___ = 22
10 + 12 or 12 + 10
___ + ___ = 20
11 + 9 or 9 + 11
12 + 12 = ___
24
What are the four facts for 6, 5, 11.
6 + 5 = 11
5 + 6 = 11
11 - 6 = 5
11 - 5 = 6
5 + 6 = 11
6 + 6 - 1
Doubles -1