五年级数学下册分数加减法简便运算

五年级数学下册分数加减法简便运算

  • 简介

    一、加法 + + = + + =1 + =1 + + + =( + )+( + ) = + 1 =1 二、减法 - - = -( + ) = - 1 = -( + ) = - - = - =0 三、加减混合运算 - + = + - =1 - = - + - = + - ( + ) =1- =

五年级数学下册分数加减法简便运算