怎样运用乘法分配律解决奥数题?或者结合律和交换律333x334+222x999 1999+999x999 = == ==33300_数学解答

怎样运用乘法分配律解决奥数题?
或者结合律和交换律
333x334+222x999 1999+999x999
= =
= =
=333000 =1000000 要用乘法定律哦！

人气：291 ℃　时间：2020-03-28 13:27:16

解答

简单
333x334+222x999
=333x334+666x333
=333x1000
=333000
1999+999x999
=1000+999+999x999
=1000+999x1000
=1000x1000
=1000000