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每段的長度要用總長度除以分的份數,就是4÷8=0.5(米),而占幾分之幾的類型問題得用占字前面的份數除以總份數,比如3段就是3÷8=⅜;.
把4米長的繩子平均分成3段,每段是3分之4米 每段是全長的3分之1
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