20 加法 55 等于多少？
20 + 55 = 75
20加法55 等于 75
竖式演算
验算
- 用减法验算：75 − 55 = 20
- 用减法验算：75 − 20 = 55
相关题目
20 + 56 = 76
20 + 54 = 74
20 + 57 = 77
20 + 53 = 73
20 + 58 = 78
20 + 52 = 72
20 + 59 = 79
20 + 51 = 71
19 + 55 = 74
21 + 55 = 76
22 + 55 = 77
18 + 55 = 73
23 + 55 = 78
17 + 55 = 72
24 + 55 = 79
16 + 55 = 71
1 + 74 = 75
2 + 73 = 75
3 + 72 = 75
4 + 71 = 75
5 + 70 = 75
6 + 69 = 75
33 + 46 = 79
4 + 21 = 25
57 + 1 = 58
62 + 17 = 79
47 + 100 = 147
43 + 34 = 77
25 × 3 = 75
83 - 8 = 75