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
61 + 64 = 125
23 + 67 = 90
51 + 80 = 131
16 + 6 = 22
39 + 22 = 61
3 + 49 = 52
98 - 17 = 81
86 - 5 = 81