30 加法 79 等于多少？
30 + 79 = 109
30加法79 等于 109
竖式演算
验算
- 用减法验算：109 − 79 = 30
- 用减法验算：109 − 30 = 79
相关题目
30 + 78 = 108
30 + 80 = 110
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30 + 83 = 113
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29 + 79 = 108
31 + 79 = 110
28 + 79 = 107
32 + 79 = 111
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10 + 99 = 109
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