5.7*4.3*101用简单方法计算?
问题描述:
5.7*4.3*101用简单方法计算?
答
5.7*4.3*101 =(5+0.7)(5-0.7)*101 =(25-0.49)*101 =24.51*(100+1) =2451+24.51 =2475.51
5.7*4.3*101用简单方法计算?
5.7*4.3*101 =(5+0.7)(5-0.7)*101 =(25-0.49)*101 =24.51*(100+1) =2451+24.51 =2475.51