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Study
Mental Calculation
0
%
0
0
0
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Restart
100-70
50
Oops!
Okay!
30-8
22
Oops!
Okay!
25x1000
25000
Oops!
Okay!
75+5
80
Oops!
Okay!
200-70
130
Oops!
Okay!
38-7
31
Oops!
Okay!
10+10+10+10+10+10+10+10+10=
90
Oops!
Okay!
90-3
87
Oops!
Okay!
2+3+8=
13
Oops!
Okay!
48-3
45
Oops!
Okay!
95-5
90
Oops!
Okay!
9x9
81
Oops!
Okay!
175+5
180
Oops!
Okay!
49-5
44
Oops!
Okay!
1000-250
750
Oops!
Okay!
280+20
300
Oops!
Okay!
2+2+2+2+2=
10
Oops!
Okay!
24+6
30
Oops!
Okay!
17+3
20
Oops!
Okay!
5x5
25
Oops!
Okay!
16+4
20
Oops!
Okay!
1x9
9
Oops!
Okay!
5+5+5+5+5+5+5=
35
Oops!
Okay!
97-5
92
Oops!
Okay!
352-10
342
Oops!
Okay!
27+5+3
35
Oops!
Okay!
29+1
30
Oops!
Okay!
7x8
56
Oops!
Okay!
1000-600
400
Oops!
Okay!
50-6
44
Oops!
Okay!
5720-100
5620
Oops!
Okay!
3+7+5+4=
19
Oops!
Okay!
35+1
36
Oops!
Okay!
3x3
9
Oops!
Okay!
6x4
24
Oops!
Okay!
25x10
250
Oops!
Okay!
20-3-10=
7
Oops!
Okay!
7x4
28
Oops!
Okay!
4+9+6=
19
Oops!
Okay!
8x4
32
Oops!
Okay!
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