1 bao xi măng có khối lượng 50kg.3/10 bao xi măng đó nặng bnh kg?

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1 bao xi măng có khối lượng 50kg.3/10 bao xi măng đó nặng bnh kg?

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    $\dfrac{3}{10}$ bao xi măng đó nặng số kg là:

     `50` x $\dfrac{3}{10}$ `=` `15` (kg)

    Đáp số: `15` kg

     

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