8 加法 9 等于多少？
8 + 9 = 17
8加法9 等于 17
竖式演算
验算
- 用减法验算：17 − 9 = 8
- 用减法验算：17 − 8 = 9
相关题目
8 + 8 = 16
8 + 10 = 18
8 + 11 = 19
8 + 7 = 15
8 + 12 = 20
8 + 6 = 14
8 + 13 = 21
8 + 5 = 13
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9 + 9 = 18
6 + 9 = 15
10 + 9 = 19
11 + 9 = 20
5 + 9 = 14
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1 + 16 = 17
2 + 15 = 17
3 + 14 = 17
4 + 13 = 17
5 + 12 = 17
6 + 11 = 17
76 + 41 = 117
53 + 19 = 72
23 + 58 = 81
92 + 15 = 107
52 + 70 = 122
97 + 70 = 167
42 - 25 = 17
78 - 61 = 17