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Study
Addition and Subtraction
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61 - 27
34
Oops!
Okay!
48 - 19
29
Oops!
Okay!
74 - 26
48
Oops!
Okay!
83 - 45
38
Oops!
Okay!
18 + 56
74
Oops!
Okay!
66 + 33
99
Oops!
Okay!
27 + 64
91
Oops!
Okay!
91 - 23
68
Oops!
Okay!
26 + 96
122
Oops!
Okay!
44 + 88
132
Oops!
Okay!
26 + 17
43
Oops!
Okay!
23 - 14
9
Oops!
Okay!
74 - 59
15
Oops!
Okay!
81 + 29
110
Oops!
Okay!
56 + 36
92
Oops!
Okay!
63 - 33
30
Oops!
Okay!
50 - 26
24
Oops!
Okay!
58 + 38
96
Oops!
Okay!
89 - 46
43
Oops!
Okay!
77 + 27
104
Oops!
Okay!
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