999x111+333X667=怎么用简便方法计?
999x111+333X667=怎么用简便方法计算
999分成333x3,那么算式可以写成333x3x111+333X667=333x(333+667)=333000
=333*333+333+667 =333*(333+667) =333*1000 =333000
答:999*111+333*667 =333*3*111+333*667 =333*333+333*667 =333*(333+667) =333*1000 =33...详情>>
答:详情>>