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by BlastRoom
Find the unknown number in addition and subtraction equations within 20.
#equation_cards#us_grade_1_math
40 questions
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More correct answers pulls the rope your way.
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8 + ___ = 13
13 - ___ = 5
___ + 9 = 16
___ - 4 = 8
15 - ___ = 9
18 - ___ = 10
___ - 7 = 6
20 - ___ = 5
5 = ___ - 13
20 - ___ = 9
___ + 11 = 19
14 + ___ = 18
6 = ___ - 5
___ + 12 = 17
18 - ___ = 5
___ + 1 = 15
12 = ___ - 4
11 - ___ = 7
7 = ___ - 8
20 - ___ = 11
14 - ___ = 11
___ + 14 = 17
___ - 15 = 5
13 + ___ = 15
3 + ___ = 17
1 = ___ - 3
1 + ___ = 14
___ - 5 = 12
11 + ___ = 12
___ + 1 = 6
2 + ___ = 17
___ + 6 = 15
11 = ___ - 5
1 = ___ - 10
___ + 4 = 16
___ + 14 = 20
2 = ___ - 10
17 - ___ = 15
7 = ___ - 13
6 + ___ = 17
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20 questions
