40 加法 21 等于多少？
40 + 21 = 61
40加法21 等于 61
竖式演算
验算
- 用减法验算：61 − 21 = 40
- 用减法验算：61 − 40 = 21
相关题目
40 + 20 = 60
40 + 22 = 62
40 + 19 = 59
40 + 23 = 63
40 + 24 = 64
40 + 18 = 58
40 + 25 = 65
40 + 17 = 57
39 + 21 = 60
41 + 21 = 62
38 + 21 = 59
42 + 21 = 63
37 + 21 = 58
43 + 21 = 64
44 + 21 = 65
36 + 21 = 57
1 + 60 = 61
2 + 59 = 61
3 + 58 = 61
4 + 57 = 61
5 + 56 = 61
6 + 55 = 61
63 + 13 = 76
75 + 23 = 98
4 + 5 = 9
57 + 22 = 79
38 + 11 = 49
61 + 2 = 63
89 - 28 = 61
93 - 32 = 61