(1)27×[(982-10)÷9] (2)(540+240)÷12×30 (3)(705-684)×(76+54) (4)[250-(120

(1)27×[(982-10)÷9] (2)(540+240)÷12×30 (3)(705-684)×(76+54) (4)[250-(120-90)]÷20

(1)原式=27×(972÷9)
    =27×108
    =2916
(2)原式=780÷12×30
    =65×30
    =1950
(3)原式=21×130
    =2730
(4)原式=220÷20
    =11

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