文档介绍：简便计算练****题一、2356-(1356-721)1235-(1780-1665)75×27+19×2531×870+13×31025×65+25×28二、(300+6)x1225x(4+8)125x(35+8)(13+24)x8968-599三、84x101504x2578x10225x20499x64四、99x16638x99999x9999X13+1325+199X25五、78X4+78X3+78X3125X32X825X32X12588X12572X125六、8100÷4÷753000÷125÷81250÷25÷51200-624-762100-728-772七、847-527-273278+463+22+3732X16+14X32732+580+2683600÷25÷4八、425+14+186214-(86+14)273-73-27787-(87-29)365-(65+118)九、455-(155+230)576-285+85825-657+57690-177+77755-287+87十、871-299157-99363-199968-599178X101-178十一、83X102-83X217X23-23X735X127-35X16-11X353999+4981883-398十二、12×2575×24138×25×4(13×125)×(3×8)(12+24+80)×50十三、25×32×12532×(25+125)88×125102×76178×101-178十四、84×36+64×8475×99+2×7598×199123×18-123×3+85×12350×(34×4)×3十五、25×(24+16)178×99+17879×42+79+79×577300÷25÷48100÷4