tính thuạn tiện nhất 13,25 : 0,5 + 13,25 : 0,2 + 0,25

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tính thuạn tiện nhất
13,25 : 0,5 + 13,25 : 0,2 + 0,25

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Arya 4 tuần 2021-11-17T07:27:16+00:00 2 Answers 7 views 0

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    0
    2021-11-17T07:28:18+00:00

    Bài làm:

    0
    2021-11-17T07:29:03+00:00

    $13,25:0,5+13,25:0,2+0,25$

    $=13,25:\dfrac{1}{2}+13,25:\dfrac{1}{5}+\dfrac{1}{4}$

    $=13,25×2+13,25×5+\dfrac{1}{4}$

    $=13,25×(2+5)+\dfrac{1}{4}$

    $=13,25×7+\dfrac{1}{4}$

    $=\dfrac{371}{4}+\dfrac{1}{4}$

    $=\dfrac{372}{4}$

    $=93$.

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