1 / 4

分数的加减法

分数的加减法. 同分母分数加减法的计算方法:. 同分母分数相加(减),分母不变,分子相加(减)。. 异分母分数加减法的计算方法:. 异分母分数相加(减), 先通分 ,然后按照 同分母 分数加(减) 的方法进行计算。. 分数加法和整数加法意义相同,是把两个数合并成一个数的运算。. 分数减法的意义与整数减法的意义相同,是已知两个加数的和与其中一个加数,求另一个加数的运算。. 5. 8. 5. 3. -. 8. 8. 8. 8. 1 -. 想办法,把 1 变成与另一个分数相同分母的分数 , 再计算。. =. =.

Download Presentation

分数的加减法

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript


  1. 分数的加减法

  2. 同分母分数加减法的计算方法: 同分母分数相加(减),分母不变,分子相加(减)。 异分母分数加减法的计算方法: 异分母分数相加(减),先通分,然后按照同分母分数加(减) 的方法进行计算。

  3. 分数加法和整数加法意义相同,是把两个数合并成一个数的运算。分数加法和整数加法意义相同,是把两个数合并成一个数的运算。 分数减法的意义与整数减法的意义相同,是已知两个加数的和与其中一个加数,求另一个加数的运算。

  4. 5 8 5 3 - 8 8 8 8 1 - 想办法,把1变成与另一个分数相同分母的分数,再计算。 = =

More Related