2.9×0.45+0.29×4.2+0.029×13+怎样用简便方法计算?
0.029×0.45+0.29×4.2+0.029×13=0.029×45+0.029×42+0.029×13=0.029×(45+42+13)=0.029×100=2....
0.029×0.45+0.29×4.2+0.029×13 =0.029×45+0.029×42+0.029×13 =0.029×(45+42+13) =0.029×100 =2.9
展开
1个回答
推荐律师服务:
若未解决您的问题,请您详细描述您的问题,通过百度律临进行免费专业咨询