问题 计算题
计算下列各题,能简算的要简算。
(1)27×25×4(2)125×56(3)(125-12)×8
(4)987-(323+487)(5)58×17+17×42(6)826-519+174-381
答案

(1)原式=27×(25×4)

                =27×100

                =2700(2)原式=125×8×7

                =1000×7

                =7000(3)原式=125×8-12×8

                =1000-96

                =904

(4)原式=987-487-323

                =500-323

                =177(5)原式=(58+42)×17

                =100×17

                =1700(6)原式=826+174-(519+381)

                =1000-900

                =100

单项选择题
单项选择题 A1型题