160+170+180+190+200+210+220=( )乘( ) =( )

问题描述:

160+170+180+190+200+210+220
=( )乘( ) =( )

=190*7=1330

190乘7=1330

160+170+180+190+200+210+220
=(190 )乘(7 ) =(1330 )