100 减法 89 等于多少？
100 - 89 = 11
100减法89 等于 11
竖式演算
验算
- 用加法验算：11 + 89 = 100
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100 - 88 = 12
100 - 90 = 10
100 - 87 = 13
100 - 91 = 9
100 - 92 = 8
100 - 86 = 14
100 - 93 = 7
100 - 85 = 15
99 - 89 = 10
98 - 89 = 9
97 - 89 = 8
96 - 89 = 7
95 - 89 = 6
94 - 89 = 5
93 - 89 = 4
92 - 89 = 3
12 - 1 = 11
13 - 2 = 11
14 - 3 = 11
15 - 4 = 11
16 - 5 = 11
17 - 6 = 11
100 - 79 = 21
100 - 56 = 44
100 - 31 = 69
100 - 81 = 19
100 - 2 = 98
100 - 8 = 92
4 + 7 = 11
10 + 1 = 11