20 加法 51 等于多少？
20 + 51 = 71
20加法51 等于 71
竖式演算
验算
- 用减法验算：71 − 51 = 20
- 用减法验算：71 − 20 = 51
相关题目
20 + 50 = 70
20 + 52 = 72
20 + 49 = 69
20 + 53 = 73
20 + 48 = 68
20 + 54 = 74
20 + 47 = 67
20 + 55 = 75
19 + 51 = 70
21 + 51 = 72
22 + 51 = 73
18 + 51 = 69
23 + 51 = 74
17 + 51 = 68
24 + 51 = 75
16 + 51 = 67
1 + 70 = 71
2 + 69 = 71
3 + 68 = 71
4 + 67 = 71
5 + 66 = 71
6 + 65 = 71
100 + 66 = 166
44 + 23 = 67
45 + 22 = 67
39 + 40 = 79
26 + 71 = 97
85 + 100 = 185
76 - 5 = 71
1 × 71 = 71