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Study
Càlcul mental
0
%
0
0
0
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Restart
3-0
3
Oops!
Okay!
7+5
12
Oops!
Okay!
10+4
14
Oops!
Okay!
10+3+2
15
Oops!
Okay!
10+7+2
19
Oops!
Okay!
10+5+5
20
Oops!
Okay!
5+3
8
Oops!
Okay!
10+2+3
15
Oops!
Okay!
10-2
8
Oops!
Okay!
5+5
10
Oops!
Okay!
__12__
11-12-13
Oops!
Okay!
5-5
0
Oops!
Okay!
3+2
5
Oops!
Okay!
__18__
17- 18-19
Oops!
Okay!
__5__
4-5-6
Oops!
Okay!
8+1
9
Oops!
Okay!
4-2
2
Oops!
Okay!
8-3
5
Oops!
Okay!
__ 15 __
14-15-16
Oops!
Okay!
6-1
5
Oops!
Okay!
4+8
12
Oops!
Okay!
4+6
10
Oops!
Okay!
10+9
19
Oops!
Okay!
__8__
7-8-9
Oops!
Okay!
10+3+5
18
Oops!
Okay!
10+6+1
17
Oops!
Okay!
__19__
18-19-20
Oops!
Okay!
__17__
16-17-18
Oops!
Okay!
9-6
3
Oops!
Okay!
10+6
16
Oops!
Okay!
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