Suma
8 + 2 =
What is 10?
10-5 =
What is 5?
10 + ___ = 15
5
9 + 4 =
What is 13?
13 - 4 =
What is 9?
9 + ___ = 13
4
7 + 8=
What is 15?
14 - 6 =
What is 8?
___ + 7 = 17
10
10 + 7 + 2 =
What is 19?
16 - 7 =
What is 9?
___ + 8 = 14
6
9 + 8 + 3 =
What is 20?
16 - 9 =
What is 7?
__ + 7 = 15
8