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Subtracting Without Regrouping
Correct Answers:
1.
47
31
2.
73
52
3.
43
12
4.
59
37
5.
65
12
6.
158
32
7.
345
131
8.
257
143
9.
658
326
10.
763
411
11.
895
684
12.
594
222