4又2/11*5又3/8-4又2/11*4.375 简便计算(速度)
问题描述:
4又2/11*5又3/8-4又2/11*4.375 简便计算(速度)
答
=4又2/11*(5又3/8-4.375)
=4又2/11*(5.375-4.375)
=4又2/11*1
=4又2/11
答
4又2/11*5又3/8-4又2/11*4.375
=4又2/11*(5又3/8-4.375)
=4又2/11*1
=4又2/11