计算:①-40-28-(-19)+(-24);②-0.5-(-314)+2.75-(+712);③(-5)×8×(-7)×(-0.25);④(
计算:①-40-28-(-19)+(-24);②-0.5-(-314)+2.75-(+712);③(-5)×8×(-7)×(-0.25);④(12?23+54?56?38...
计算:①-40-28-(-19)+(-24);②-0.5-(-314)+2.75-(+712);③(-5)×8×(-7)×(-0.25);④(12?23+54?56?38)×(?24);⑤[1?(1?0.5×13)]×[2?(?3)2].
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