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用简便方法计算101x27'x25x4

127X25X4 =127x(25x4) =127x100 =12700 13十34十27十5....

原式=[1×(2×11)×(3×9)×(4×6)×7×8×(5×5)×2]÷(27×25×24×22...

小孩这都不会

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