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
32 + 60 = 92
73 + 6 = 79
51 + 22 = 73
4 + 31 = 35
6 + 33 = 39
11 + 83 = 94
80 - 20 = 60
61 - 1 = 60