20 加法 77 等于多少？
20 + 77 = 97
20加法77 等于 97
竖式演算
验算
- 用减法验算：97 − 77 = 20
- 用减法验算：97 − 20 = 77
相关题目
20 + 76 = 96
20 + 78 = 98
20 + 75 = 95
20 + 79 = 99
20 + 74 = 94
20 + 80 = 100
20 + 73 = 93
20 + 81 = 101
19 + 77 = 96
21 + 77 = 98
22 + 77 = 99
18 + 77 = 95
23 + 77 = 100
17 + 77 = 94
24 + 77 = 101
16 + 77 = 93
1 + 96 = 97
2 + 95 = 97
3 + 94 = 97
4 + 93 = 97
5 + 92 = 97
6 + 91 = 97
23 + 26 = 49
6 + 53 = 59
21 + 33 = 54
12 + 26 = 38
60 + 37 = 97
37 + 40 = 77
97 × 1 = 97
99 - 2 = 97