30 减法 18 等于多少?
30 - 18 = 12
30减法18 等于 12
竖式演算
验算
- 用加法验算:12 + 18 = 30
相关题目
30 - 17 = 13
30 - 19 = 11
30 - 20 = 10
30 - 16 = 14
30 - 21 = 9
30 - 15 = 15
30 - 22 = 8
30 - 14 = 16
29 - 18 = 11
31 - 18 = 13
28 - 18 = 10
32 - 18 = 14
27 - 18 = 9
33 - 18 = 15
34 - 18 = 16
26 - 18 = 8
13 - 1 = 12
14 - 2 = 12
15 - 3 = 12
16 - 4 = 12
17 - 5 = 12
18 - 6 = 12
84 - 48 = 36
91 - 4 = 87
20 - 13 = 7
30 - 25 = 5
86 - 29 = 57
54 - 26 = 28
7 + 5 = 12
2 + 10 = 12