33ⅹ13-99 怎样简算
问题描述:
33ⅹ13-99 怎样简算
答
33ⅹ13-99
=33x10+33x3-99
=330+99-99
=330
33ⅹ13-99 怎样简算
33ⅹ13-99
=33x10+33x3-99
=330+99-99
=330