六年级上册数学期末复习:分数简便计算

六年级上册数学期末复习:分数简便计算

  • 简介

    87× =(86+1)× =86×+1× =3+ =3 68×(-) =68×-68× =51-44 =7

六年级上册数学期末复习:分数简便计算