Two Digit Subtraction with Regrouping (differences from 100)

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83 - 15
61 - 32
45 - 37
62 - 33
64 - 45
33 - 15
40 - 23
54 - 35
66 - 37
52 - 33
65 - 38
41 - 14
41 - 13
41 - 16
34 - 29
84 - 69
47 - 28
54 - 25
73 - 35
53 - 17
93 - 58
93 - 57
93 - 59
93 - 15
60 - 25
70 - 19
52 - 44
71 - 42
33 - 27
32 - 13
43 - 25
48 - 39
54 - 17
86 - 29
97 - 18
90 - 47