50 减法 42 等于多少?
50 - 42 = 8
50减法42 等于 8
竖式演算
验算
- 用加法验算:8 + 42 = 50
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50 - 41 = 9
50 - 43 = 7
50 - 40 = 10
50 - 44 = 6
50 - 39 = 11
50 - 45 = 5
50 - 38 = 12
50 - 46 = 4
49 - 42 = 7
51 - 42 = 9
52 - 42 = 10
48 - 42 = 6
53 - 42 = 11
47 - 42 = 5
54 - 42 = 12
46 - 42 = 4
9 - 1 = 8
10 - 2 = 8
11 - 3 = 8
12 - 4 = 8
13 - 5 = 8
14 - 6 = 8
75 - 49 = 26
73 - 28 = 45
94 - 77 = 17
73 - 55 = 18
64 - 45 = 19
80 - 34 = 46
1 + 7 = 8
1 × 8 = 8