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Study
Addition and Subtraction: Multiples of Ten
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11 + 50 =
61
Oops!
Okay!
10 + 38 =
48
Oops!
Okay!
77 - 20 =
57
Oops!
Okay!
31 + 50 =
81
Oops!
Okay!
50 + 43 =
93
Oops!
Okay!
92 - 20 =
72
Oops!
Okay!
72 - 50 =
22
Oops!
Okay!
20 + 48 =
68
Oops!
Okay!
49 - 20 =
29
Oops!
Okay!
91 - 50 =
41
Oops!
Okay!
15 + 50 =
65
Oops!
Okay!
14 + 70 =
84
Oops!
Okay!
30 + 26 =
56
Oops!
Okay!
22 + 60 =
82
Oops!
Okay!
95 - 10 =
85
Oops!
Okay!
60 + 36 =
96
Oops!
Okay!
53 - 30 =
23
Oops!
Okay!
68 - 50 =
18
Oops!
Okay!
48 + 10 =
58
Oops!
Okay!
80 + 17 =
97
Oops!
Okay!
91 - 90 =
1
Oops!
Okay!
51 - 50 =
1
Oops!
Okay!
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