寒假数学作业

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518+18×47 419+29×54 128+28×19

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319+32×56 189+42×37 818+41×53

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32+65×37 850+27×38 269+85×39

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寒假数学作业

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寒假数学作业

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538+27×38 548+52×59 87+29×78

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299+39×48 544+56×21 531+51×88

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38+23×38 67+59×57 99+35×36

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寒假数学作业

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寒假数学作业

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