计算.(要写出计算过程)(1)4.05﹣2.86﹣0.14 (2)75×60%+24×+0.6 (3)(﹣)×45 (4)﹣×(+) (5)10.2﹣(1.25+2.5)÷1.5 (6)[2﹣(+)]÷1.
① ② ③ ④99×88+88×77+77×66+66×55.
(78.6﹣0.786×25十75%×21.4)÷15×1997.
324×11.25+65.8×112.58888008×125 0.525÷13125÷4×85.2
①②0.25×0.09×8 ③1÷[÷(1﹣)]④×18+×11.
0.387×76000﹣387×66+84×387+38.7×60101×99×999+999.