(12345+23451+34512+45123+51234)除以5=( ).

问题描述:

(12345+23451+34512+45123+51234)除以5=( ).

(12345+23451+34512+45123+51234)÷5
=11111*(1+2+3+4+5)÷5
=11111*15÷5
=11111*3
=33333