9 加法 71 等于多少？
9 + 71 = 80
9加法71 等于 80
竖式演算
验算
- 用减法验算：80 − 71 = 9
- 用减法验算：80 − 9 = 71
相关题目
9 + 70 = 79
9 + 72 = 81
9 + 69 = 78
9 + 73 = 82
9 + 74 = 83
9 + 68 = 77
9 + 75 = 84
9 + 67 = 76
8 + 71 = 79
10 + 71 = 81
11 + 71 = 82
7 + 71 = 78
12 + 71 = 83
6 + 71 = 77
13 + 71 = 84
5 + 71 = 76
1 + 79 = 80
2 + 78 = 80
3 + 77 = 80
4 + 76 = 80
5 + 75 = 80
6 + 74 = 80
51 + 75 = 126
57 + 71 = 128
8 + 74 = 82
3 + 68 = 71
45 + 70 = 115
41 + 97 = 138
16 × 5 = 80
98 - 18 = 80