3 加法 77 等于多少？
3 + 77 = 80
3加法77 等于 80
竖式演算
验算
- 用减法验算：80 − 77 = 3
- 用减法验算：80 − 3 = 77
相关题目
3 + 76 = 79
3 + 78 = 81
3 + 75 = 78
3 + 79 = 82
3 + 74 = 77
3 + 80 = 83
3 + 73 = 76
3 + 81 = 84
2 + 77 = 79
4 + 77 = 81
1 + 77 = 78
5 + 77 = 82
6 + 77 = 83
7 + 77 = 84
8 + 77 = 85
9 + 77 = 86
1 + 79 = 80
2 + 78 = 80
4 + 76 = 80
5 + 75 = 80
6 + 74 = 80
7 + 73 = 80
12 + 69 = 81
78 + 70 = 148
90 + 49 = 139
94 + 31 = 125
61 + 86 = 147
4 + 86 = 90
4 × 20 = 80
90 - 10 = 80