100 减法 15 等于多少？
100 - 15 = 85
100减法15 等于 85
竖式演算
验算
- 用加法验算：85 + 15 = 100
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100 - 14 = 86
100 - 16 = 84
100 - 13 = 87
100 - 17 = 83
100 - 12 = 88
100 - 18 = 82
100 - 11 = 89
100 - 19 = 81
99 - 15 = 84
98 - 15 = 83
97 - 15 = 82
96 - 15 = 81
95 - 15 = 80
94 - 15 = 79
93 - 15 = 78
92 - 15 = 77
86 - 1 = 85
87 - 2 = 85
88 - 3 = 85
89 - 4 = 85
90 - 5 = 85
91 - 6 = 85
100 - 34 = 66
100 - 79 = 21
100 - 65 = 35
100 - 75 = 25
100 - 87 = 13
66 + 19 = 85
71 + 14 = 85
29 + 56 = 85