07整數四則計算04簡化計算(是非01)
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22 points
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22 points
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21 points
(1) 算式452-368+548-132與452+548-(368+132)的答案相同。
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(2) 算式746-99-299與746-100-300+2的答案相同。
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(3) 算式374-99-96與374-100-100+5的答案相同。
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(4) 算式999+99+9與1000+100+10+3的答案相同。
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(5) 算式75×15÷25×12與75÷25×15×12的答案相同。
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(6) 算式450×99與450×100-450×1的答案相同。
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(7) 算式289×17÷289×7與(289÷289)×17×7的答案相同。
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