两位数带借位 · 套题 94

20 problems
1
21 - 16 =
2
25 - 17 =
3
90 - 79 =
4
33 - 28 =
5
68 - 59 =
6
71 - 54 =
7
56 - 38 =
8
62 - 16 =
9
41 - 15 =
10
94 - 19 =
11
91 - 64 =
12
50 - 25 =
13
30 - 27 =
14
81 - 35 =
15
51 - 47 =
16
45 - 16 =
17
21 - 18 =
18
72 - 38 =
19
90 - 86 =
20
62 - 57 =
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