20 加法 40 等于多少？
20 + 40 = 60
20加法40 等于 60
竖式演算
验算
- 用减法验算：60 − 40 = 20
- 用减法验算：60 − 20 = 40
相关题目
20 + 39 = 59
20 + 41 = 61
20 + 38 = 58
20 + 42 = 62
20 + 37 = 57
20 + 43 = 63
20 + 44 = 64
20 + 36 = 56
19 + 40 = 59
21 + 40 = 61
22 + 40 = 62
18 + 40 = 58
23 + 40 = 63
17 + 40 = 57
24 + 40 = 64
16 + 40 = 56
1 + 59 = 60
2 + 58 = 60
3 + 57 = 60
4 + 56 = 60
5 + 55 = 60
6 + 54 = 60
22 + 32 = 54
11 + 84 = 95
11 + 22 = 33
47 + 2 = 49
59 + 100 = 159
39 + 100 = 139
65 - 5 = 60
6 × 10 = 60