18 减法 1 等于多少？
18 - 1 = 17
18减法1 等于 17
竖式演算
验算
- 用加法验算：17 + 1 = 18
相关题目
18 - 2 = 16
18 - 3 = 15
18 - 4 = 14
18 - 5 = 13
18 - 6 = 12
18 - 7 = 11
18 - 8 = 10
18 - 9 = 9
17 - 1 = 16
19 - 1 = 18
20 - 1 = 19
16 - 1 = 15
21 - 1 = 20
15 - 1 = 14
22 - 1 = 21
14 - 1 = 13
19 - 2 = 17
20 - 3 = 17
21 - 4 = 17
22 - 5 = 17
23 - 6 = 17
24 - 7 = 17
57 - 12 = 45
65 - 44 = 21
29 - 1 = 28
96 - 4 = 92
89 - 2 = 87
48 - 37 = 11
12 + 5 = 17
1 + 16 = 17