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
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29 + 80 = 109
31 + 80 = 111
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32 + 80 = 112
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55 × 2 = 110
2 × 55 = 110