77 加法 2 等于多少？
77 + 2 = 79
77加法2 等于 79
竖式演算
验算
- 用减法验算：79 − 2 = 77
- 用减法验算：79 − 77 = 2
相关题目
77 + 1 = 78
77 + 3 = 80
77 + 4 = 81
77 + 5 = 82
77 + 6 = 83
77 + 7 = 84
77 + 8 = 85
77 + 9 = 86
76 + 2 = 78
78 + 2 = 80
75 + 2 = 77
79 + 2 = 81
74 + 2 = 76
80 + 2 = 82
73 + 2 = 75
81 + 2 = 83
1 + 78 = 79
2 + 77 = 79
3 + 76 = 79
4 + 75 = 79
5 + 74 = 79
6 + 73 = 79
21 + 57 = 78
65 + 32 = 97
40 + 20 = 60
59 + 30 = 89
6 + 43 = 49
25 + 44 = 69
89 - 10 = 79
81 - 2 = 79