30 加法 80 等于多少？
30 + 80 = 110
30加法80 等于 110
竖式演算
验算
- 用减法验算：110 − 80 = 30
- 用减法验算：110 − 30 = 80
相关题目
30 + 79 = 109
30 + 81 = 111
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30 + 77 = 107
30 + 84 = 114
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29 + 80 = 109
31 + 80 = 111
28 + 80 = 108
32 + 80 = 112
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11 + 99 = 110
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49 + 42 = 91
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5 × 22 = 110
22 × 5 = 110