Missing Subtrahend (1-9) Using Minuend (20-28) Flashcards
20 - ___ = 19
20 = ___ + 19
= 1
20 - ___ = 18
20 = ___ + 18
= 2
20 - ___ = 17
20 = ___ + 17
= 3
20 - ___ = 16
20 = ___ + 16
= 4
20 - ___ = 15
20 = ___ + 15
= 5
20 - ___ = 14
20 = ___ + 14
= 6
20 - ___ = 13
20 = ___ + 13
= 7
20 - ___ = 12
20 = ___ + 12
= 8
20 - ___ = 11
20 = ___ + 11
= 9
21 - ___ = 19
21 = ___ + 19
= 2
21 - ___ = 18
21 = ___ + 18
= 3
21 - ___ = 17
21 = ___ + 17
= 4
21 - ___ = 16
21 = ___ + 16
= 5
21 - ___ = 15
21 = ___ + 15
= 6
21 - ___ = 14
21 = ___ + 14
= 7
21 - ___ = 13
21 = ___ + 13
= 8
21 - ___ = 12
21 = ___ + 12
= 9
22 - ___ = 19
22 = ___ + 19
= 3
22 - ___ = 18
22 = ___ + 18
= 4
22 - ___ = 17
22 = ___ + 17
= 5
22 - ___ = 16
22 = ___ + 16
= 6
22 - ___ = 15
22 = ___ + 15
= 7
22 - ___ = 14
22 = ___ + 14
= 8
22 - ___ = 13
22 = ___ + 13
= 9
23 - ___ = 19
23 = ___ + 19
= 4
23 - ___ = 18
23 = ___ + 18
= 5
23 - ___ = 17
23 = ___ + 17
= 6
23 - ___ = 16
23 = ___ + 16
= 7
23 - ___ = 15
23 = ___ + 15
= 8
23 - ___ = 14
23 = ___ + 14
= 9
24 - ___ = 19
24 = ___ + 19
= 5
24 - ___ = 18
24 + ___ = 18
= 6
24 - ___ = 17
24 = ___ + 17
= 7
24 - ___ = 16
24 = ___ + 16
= 8
24 - ___ = 15
24 = ___ + 15
= 9
25 - ___ = 19
25 = ___ + 19
= 6
25 - ___ = 18
25 = ___ + 18
= 7
25 - ___ = 17
25 = ___ + 17
= 8
25 - ___ = 16
25 = ___ + 16
= 9
26 - ___ = 19
26 = ___ + 19
= 7
26 - ___ = 18
26 = ___ + 18
= 8
26 - ___ = 17
26 = ___ + 17
= 9
27 - ___ = 19
27 = ___ + 19
= 8
27 - ___ = 18
27 = ___ + 18
= 9
28 - ___ = 19
28 = ___ + 19
= 9
