24 加法 31 等于多少？
24 + 31 = 55
24加法31 等于 55
竖式演算
验算
- 用减法验算：55 − 31 = 24
- 用减法验算：55 − 24 = 31
相关题目
24 + 30 = 54
24 + 32 = 56
24 + 29 = 53
24 + 33 = 57
24 + 28 = 52
24 + 34 = 58
24 + 35 = 59
24 + 27 = 51
23 + 31 = 54
25 + 31 = 56
22 + 31 = 53
26 + 31 = 57
21 + 31 = 52
27 + 31 = 58
20 + 31 = 51
28 + 31 = 59
1 + 54 = 55
2 + 53 = 55
3 + 52 = 55
4 + 51 = 55
5 + 50 = 55
6 + 49 = 55
60 + 23 = 83
33 + 22 = 55
68 + 20 = 88
2 + 15 = 17
100 + 70 = 170
34 + 5 = 39
67 - 12 = 55
84 - 29 = 55