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