100 减法 31 等于多少?
100 - 31 = 69
100减法31 等于 69
竖式演算
验算
- 用加法验算:69 + 31 = 100
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100 - 30 = 70
100 - 32 = 68
100 - 29 = 71
100 - 33 = 67
100 - 28 = 72
100 - 34 = 66
100 - 35 = 65
100 - 27 = 73
99 - 31 = 68
98 - 31 = 67
97 - 31 = 66
96 - 31 = 65
95 - 31 = 64
94 - 31 = 63
93 - 31 = 62
92 - 31 = 61
70 - 1 = 69
71 - 2 = 69
72 - 3 = 69
73 - 4 = 69
74 - 5 = 69
75 - 6 = 69
100 - 86 = 14
100 - 21 = 79
100 - 62 = 38
100 - 13 = 87
100 - 82 = 18
100 - 71 = 29
13 + 56 = 69
38 + 31 = 69