列竖式计算.(1)168×24= (2)28×153=
计算:98×91.
计算下面各题.(1)525÷7÷5(2)128×5÷8.
怎样简便就怎样算①0.25×1.25×0.8×0.4②③1990×198.9﹣1989×198.8④2007⑤(1)+(1))+…(1)
怎样简便就怎样算① ②③397÷7+47.5÷0.7+105.6÷1.4 ④﹣+﹣+…﹣.
937×125×25×64×5= .