50 减法 28 等于多少？
50 - 28 = 22
50减法28 等于 22
竖式演算
验算
- 用加法验算：22 + 28 = 50
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50 - 29 = 21
50 - 27 = 23
50 - 30 = 20
50 - 26 = 24
50 - 31 = 19
50 - 25 = 25
50 - 32 = 18
50 - 24 = 26
49 - 28 = 21
51 - 28 = 23
48 - 28 = 20
52 - 28 = 24
47 - 28 = 19
53 - 28 = 25
46 - 28 = 18
54 - 28 = 26
23 - 1 = 22
24 - 2 = 22
25 - 3 = 22
26 - 4 = 22
27 - 5 = 22
28 - 6 = 22
74 - 17 = 57
93 - 45 = 48
42 - 4 = 38
95 - 87 = 8
88 - 39 = 49
83 - 34 = 49
21 + 1 = 22
17 + 5 = 22