20 加法 60 等于多少？
20 + 60 = 80
20加法60 等于 80
竖式演算
验算
- 用减法验算：80 − 60 = 20
- 用减法验算：80 − 20 = 60
相关题目
20 + 59 = 79
20 + 61 = 81
20 + 58 = 78
20 + 62 = 82
20 + 57 = 77
20 + 63 = 83
20 + 56 = 76
20 + 64 = 84
19 + 60 = 79
21 + 60 = 81
22 + 60 = 82
18 + 60 = 78
23 + 60 = 83
17 + 60 = 77
24 + 60 = 84
16 + 60 = 76
1 + 79 = 80
2 + 78 = 80
3 + 77 = 80
4 + 76 = 80
5 + 75 = 80
6 + 74 = 80
75 + 23 = 98
100 + 77 = 177
47 + 10 = 57
43 + 42 = 85
30 + 64 = 94
16 + 12 = 28
89 - 9 = 80
20 × 4 = 80