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Subtraction
Subtraction
Subtraction
Subtraction
Subtraction
100
42-19?
23
100
59-28?
31
100
76-45?
31
100
97-36?
61
100
85-52?
32
200
74-15?
59
200
52-23?
29
200
42-10?
32
200
79-49?
30
200
97-27?
70