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7th

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國中數學一上1-3

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  • 1. Multiple Choice
    1 minute
    1 pt
    若(-2)×(7+□)=-10,則□=?_x000B_
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  • 2. Multiple Choice
    1 minute
    1 pt
    最小正整數除以最大負整數的商是多少?
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  • 3. Multiple Choice
    1 minute
    1 pt
    下列各式,何者計算過程錯誤?_x000B_
    28×(-5)+42×(-5)=(28+42)×(-5)
    (-36)×(-9)-(-22)×(-9)=(-9)×(-36+22)
    86×(-491)+86×(-509)=86×(-491-509)
    (-1200)÷(-8)+(-1200)÷(-16)=(-1200)÷(-8-16)
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