2/3×(3-1/8-5/8) 用简便算法
问题描述:
2/3×(3-1/8-5/8) 用简便算法
答
=Z/3X3一2/3X3/4
=2一1/2
=1又1/2
2/3×(3-1/8-5/8) 用简便算法
=Z/3X3一2/3X3/4
=2一1/2
=1又1/2