2 加法 30 等于多少？
2 + 30 = 32
2加法30 等于 32
竖式演算
验算
- 用减法验算：32 − 30 = 2
- 用减法验算：32 − 2 = 30
相关题目
2 + 29 = 31
2 + 31 = 33
2 + 28 = 30
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2 + 27 = 29
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2 + 26 = 28
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3 + 30 = 33
4 + 30 = 34
5 + 30 = 35
6 + 30 = 36
7 + 30 = 37
8 + 30 = 38
9 + 30 = 39
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5 + 27 = 32
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