Subtractions:
Method 1:
100-45=55
4 5
Subtract 9 Subtract 10
5 5
Method 2:
1000-634
6 3 4
Subtract 9 Subtract 9 Subtract 10
3 6 6
Method3:
10000-5437
5 4 3 7
Subtract 9 Subtract 9 Subtract 9 Subtract 10
4 5 6 3
Method4:
1000-450
4 5 0
Subtract 9 Subtract 10 last 0 take 0
5 5 0
Method5:
10000-5630
5 6 3 0
Subtract
9 Subtract 9 Subtract 10 last 0 take 0
4 3 7 0
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