87 减法 75 等于多少？
87 - 75 = 12
87减法75 等于 12
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验算
- 用加法验算：12 + 75 = 87
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87 - 74 = 13
87 - 76 = 11
87 - 73 = 14
87 - 77 = 10
87 - 78 = 9
87 - 72 = 15
87 - 79 = 8
87 - 71 = 16
86 - 75 = 11
88 - 75 = 13
85 - 75 = 10
89 - 75 = 14
84 - 75 = 9
90 - 75 = 15
91 - 75 = 16
83 - 75 = 8
13 - 1 = 12
14 - 2 = 12
15 - 3 = 12
16 - 4 = 12
17 - 5 = 12
18 - 6 = 12
66 - 63 = 3
96 - 43 = 53
77 - 54 = 23
33 - 1 = 32
98 - 75 = 23
75 - 25 = 50
5 + 7 = 12
6 + 6 = 12