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Study
Double Troubles
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%
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0
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8 + 8
16
15
17
18
Oops!
Okay!
9 + 9
17
20
19
18
Oops!
Okay!
5 + 5
14
12
10
8
Oops!
Okay!
double 11
19
18
22
20
Oops!
Okay!
double 9
18
16
19
20
Oops!
Okay!
11 + 11
18
23
22
24
Oops!
Okay!
double 8
17
18
16
15
Oops!
Okay!
6 + 6
8
12
10
14
Oops!
Okay!
double 7
16
17
14
10
Oops!
Okay!
double 6
16
14
12
11
Oops!
Okay!
10 + 10
17
20
23
18
Oops!
Okay!
double 5
6
8
15
10
Oops!
Okay!
double 10
18
20
21
22
Oops!
Okay!
7 + 7
17
16
14
12
Oops!
Okay!
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