3 加法 84 等于多少？
3 + 84 = 87
3加法84 等于 87
竖式演算
验算
- 用减法验算：87 − 84 = 3
- 用减法验算：87 − 3 = 84
相关题目
3 + 83 = 86
3 + 85 = 88
3 + 82 = 85
3 + 86 = 89
3 + 87 = 90
3 + 81 = 84
3 + 88 = 91
3 + 80 = 83
2 + 84 = 86
4 + 84 = 88
1 + 84 = 85
5 + 84 = 89
6 + 84 = 90
7 + 84 = 91
8 + 84 = 92
9 + 84 = 93
1 + 86 = 87
2 + 85 = 87
4 + 83 = 87
5 + 82 = 87
6 + 81 = 87
7 + 80 = 87
51 + 11 = 62
24 + 35 = 59
61 + 35 = 96
36 + 51 = 87
61 + 3 = 64
42 + 57 = 99
87 × 1 = 87
96 - 9 = 87