33 加法 21 等于多少？
33 + 21 = 54
33加法21 等于 54
竖式演算
验算
- 用减法验算：54 − 21 = 33
- 用减法验算：54 − 33 = 21
相关题目
33 + 20 = 53
33 + 22 = 55
33 + 19 = 52
33 + 23 = 56
33 + 24 = 57
33 + 18 = 51
33 + 25 = 58
33 + 17 = 50
32 + 21 = 53
34 + 21 = 55
31 + 21 = 52
35 + 21 = 56
30 + 21 = 51
36 + 21 = 57
29 + 21 = 50
37 + 21 = 58
1 + 53 = 54
2 + 52 = 54
3 + 51 = 54
4 + 50 = 54
5 + 49 = 54
6 + 48 = 54
11 + 50 = 61
21 + 72 = 93
100 + 78 = 178
57 + 20 = 77
12 + 37 = 49
2 + 74 = 76
86 - 32 = 54
90 - 36 = 54