问题
解答题
|
答案
(1)(12+20)×45,
=32×45,
=1440;
(2)28×17-58,
=476-58,
=418;
(3)28+12×39,
=28+468,
=496;
(4)1500-125×8,
=1500-1000,
=500.
|
(1)(12+20)×45,
=32×45,
=1440;
(2)28×17-58,
=476-58,
=418;
(3)28+12×39,
=28+468,
=496;
(4)1500-125×8,
=1500-1000,
=500.