6300除以42怎样简便
问题描述:
6300除以42怎样简便
答
6300÷42
=6300÷7÷6
=900÷6
=150
答
先约分,同时约掉7,相当于900/6,如果还看不出来,在约掉3,就成了300/2 =150.。。吼吼
答
6300/7=900/3=300/2=150
答
=4200/42+2100/42
=100+50
=150
答
6300除以12再除以3