2 加法 30 等于多少？
2 + 30 = 32
2加法30 等于 32
竖式演算
验算
- 用减法验算：32 − 30 = 2
- 用减法验算：32 − 2 = 30
相关题目
2 + 29 = 31
2 + 31 = 33
2 + 28 = 30
2 + 32 = 34
2 + 33 = 35
2 + 27 = 29
2 + 34 = 36
2 + 26 = 28
1 + 30 = 31
3 + 30 = 33
4 + 30 = 34
5 + 30 = 35
6 + 30 = 36
7 + 30 = 37
8 + 30 = 38
9 + 30 = 39
1 + 31 = 32
3 + 29 = 32
4 + 28 = 32
5 + 27 = 32
6 + 26 = 32
7 + 25 = 32
10 + 7 = 17
21 + 67 = 88
43 + 1 = 44
24 + 52 = 76
14 + 31 = 45
14 + 71 = 85
92 - 60 = 32
83 - 51 = 32