43.3*76+111*19.2+455*7.6简便

问题描述:

43.3*76+111*19.2+455*7.6简便

43.3*76+111*19.2+455*7.6
=433*7.6+455*7.6+111*19.2
=7.6*(433+455)+111*19.2
=7.6*888+111*19.2
=111*(7.6*8+19.2)
=111*80
=8880