Missing Minuends (20-28) Using Subtrahend (1-9); Reinforced by Missing Sum Flashcards
1
Q
___ - 1 = 19
___ = 1 + 19
A
= 20
2
Q
___ - 2 = 18
___ = 2 + 18
A
= 20
3
Q
___ - 3 = 17
___ = 3 + 17
A
= 20
4
Q
___ - 4 = 16
___ = 4 + 16
A
= 20
5
Q
___ - 5 = 15
___ = 5 + 15
A
= 20
6
Q
___ - 6 = 14
___ = 6 + 14
A
= 20
7
Q
___ - 7 = 13
___ = 7 + 13
A
= 20
8
Q
___ - 8 = 12
___ = 8 + 12
A
= 20
9
Q
___ - 9 = 11
___ = 9 + 11
A
= 20
10
Q
___ - 2 = 19
___ = 2 + 19
A
= 21
11
Q
___ - 3 = 18
___ = 3 + 18
A
= 21
12
Q
___ - 4 = 17
___ = 4 + 17
A
= 21
13
Q
___ - 5 = 16
___ = 5 + 16
A
= 21
14
Q
___ - 6 = 15
___ = 6 + 15
A
= 21
15
Q
___ - 7 = 14
___ = 7 + 14
A
= 21
16
Q
___ - 8 = 13
___ = 8 + 13
A
= 21
17
Q
___ - 9 = 12
___ = 9 + 12
A
= 21
18
Q
___ - 3 = 19
___ = 3 + 19
A
= 22
