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80=2×2×2×2×5,96=2×2×2×2×2×3,80和96的最大公因數是:2×2×2×2=16;(96÷16)×(80÷16),=6×5,=30(塊);答:這種正方形的邊長最長是16釐米,被剪成30塊.
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