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Study
Cálculo Mental_lunes 31
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10 + 6 =
16
Oops!
Okay!
10 + 7 =
17
Oops!
Okay!
14 - 4 =
10
Oops!
Okay!
12 - 2 =
10
Oops!
Okay!
10 + 5 =
15
Oops!
Okay!
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