17 加法 11 等于多少？
17 + 11 = 28
17加法11 等于 28
竖式演算
验算
- 用减法验算：28 − 11 = 17
- 用减法验算：28 − 17 = 11
相关题目
17 + 10 = 27
17 + 12 = 29
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17 + 14 = 31
17 + 8 = 25
17 + 15 = 32
17 + 7 = 24
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18 + 11 = 29
15 + 11 = 26
19 + 11 = 30
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2 + 26 = 28
3 + 25 = 28
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