77 加法 20 等于多少？
77 + 20 = 97
77加法20 等于 97
竖式演算
验算
- 用减法验算：97 − 20 = 77
- 用减法验算：97 − 77 = 20
相关题目
77 + 19 = 96
77 + 21 = 98
77 + 22 = 99
77 + 18 = 95
77 + 23 = 100
77 + 17 = 94
77 + 24 = 101
77 + 16 = 93
76 + 20 = 96
78 + 20 = 98
75 + 20 = 95
79 + 20 = 99
74 + 20 = 94
80 + 20 = 100
73 + 20 = 93
81 + 20 = 101
1 + 96 = 97
2 + 95 = 97
3 + 94 = 97
4 + 93 = 97
5 + 92 = 97
6 + 91 = 97
65 + 14 = 79
52 + 31 = 83
1 + 38 = 39
91 + 4 = 95
20 + 29 = 49
10 + 73 = 83
1 × 97 = 97
99 - 2 = 97