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脱式计算,能简算的要简算37÷57×715613÷7+17×81327+57×15−114156÷(314÷613)
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脱式计算,能简算的要简算
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▼优质解答
答案和解析
(1)
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(2)
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| 7 |
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| 15 |
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| 25 |
(2)
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(3)
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(4)
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