Subtraction Training

Enter the diffrence of the number at the top and the number on the left in the square.
Range:100 to 999
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
- 423 303 221 179 290 673 554 513 195 960 -
889 889
220 220
955 955
896 896
135 135
571 571
707 707
779 779
578 578
242 242
- 423 303 221 179 290 673 554 513 195 960 -