77 加法 4 等于多少？
77 + 4 = 81
77加法4 等于 81
竖式演算
验算
- 用减法验算：81 − 4 = 77
- 用减法验算：81 − 77 = 4
相关题目
77 + 3 = 80
77 + 5 = 82
77 + 2 = 79
77 + 6 = 83
77 + 1 = 78
77 + 7 = 84
77 + 8 = 85
77 + 9 = 86
76 + 4 = 80
78 + 4 = 82
75 + 4 = 79
79 + 4 = 83
74 + 4 = 78
80 + 4 = 84
73 + 4 = 77
81 + 4 = 85
1 + 80 = 81
2 + 79 = 81
3 + 78 = 81
4 + 77 = 81
5 + 76 = 81
6 + 75 = 81
93 + 53 = 146
44 + 26 = 70
80 + 91 = 171
9 + 62 = 71
75 + 50 = 125
92 + 11 = 103
3 × 27 = 81
91 - 10 = 81