Subtraction Training

Enter the diffrence of the number at the top and the number on the left in the square.
Range:10 to 99
Size:10 x 10
Time:
0.0
Avg. Time:Not available
Best Time:Not available
Attempts:0
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Attempts:Login to view
- 50 96 61 66 82 21 56 39 84 20 -
49 49
33 33
48 48
77 77
27 27
66 66
32 32
14 14
60 60
41 41
- 50 96 61 66 82 21 56 39 84 20 -