2 加法 77 等于多少？
2 + 77 = 79
2加法77 等于 79
竖式演算
验算
- 用减法验算：79 − 77 = 2
- 用减法验算：79 − 2 = 77
相关题目
2 + 76 = 78
2 + 78 = 80
2 + 75 = 77
2 + 79 = 81
2 + 74 = 76
2 + 80 = 82
2 + 73 = 75
2 + 81 = 83
1 + 77 = 78
3 + 77 = 80
4 + 77 = 81
5 + 77 = 82
6 + 77 = 83
7 + 77 = 84
8 + 77 = 85
9 + 77 = 86
1 + 78 = 79
3 + 76 = 79
4 + 75 = 79
5 + 74 = 79
6 + 73 = 79
7 + 72 = 79
25 + 61 = 86
10 + 7 = 17
63 + 5 = 68
35 + 22 = 57
7 + 81 = 88
26 + 21 = 47
96 - 17 = 79
88 - 9 = 79