12 加法 68 等于多少？
12 + 68 = 80
12加法68 等于 80
竖式演算
验算
- 用减法验算：80 − 68 = 12
- 用减法验算：80 − 12 = 68
相关题目
12 + 67 = 79
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13 + 68 = 81
10 + 68 = 78
14 + 68 = 82
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2 + 78 = 80
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