计算下列各题,能简算的要简算。
1042-384÷16×13 4.86×[1÷(2.1-2.09)]
41×102 0.8×3.6-0.8×0.6
125×32×25 8.8×125
【答案】730;486;4182;2.4;100000;1100
【解析】后四题过程:
41×102 0.8×3.6-0.8×0.6
=41×(100+2) =0.8×(3.6-0.6)
=41×100+41×2 =0.8×3
=4100+82 =2.4
=4182
125×32×25 8.8×125
=125×(8×4)×25 =(8+0.8)×125
=(125×8)×(4×25) =8×125+0.8×125
=1000×100 =1000+100
=100000 =1100