2300/25简便计算?34*52+34+68简便计算
问题描述:
2300/25简便计算?34*52+34+68简便计算
答
①:2300/25
=2300/(100/4)
=2300/100*4
=92
②:34*52+34*68
=34*(52+68)
=34*120
=34*100+34*20
=3400+680
=4080