1 / 11

How do you subtract with fractions or mixed numbers by decomposing?

How do you subtract with fractions or mixed numbers by decomposing?. 3 - =. 2 - . 3 - 1. In this lesson you will learn how to subtract with fractions or mixed numbers by decomposing. How do I decide which equivalent fraction to use?. This could go on forever!.

kenley
Download Presentation

How do you subtract with fractions or mixed numbers by decomposing?

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. How do you subtract with fractions or mixed numbers by decomposing? 3 - = 2 - 3 - 1

  2. In this lesson you will learn how to subtract with fractions or mixed numbers by decomposing.

  3. How do I decide which equivalent fraction to use? This could go on forever! We know that equivalent fractions show equal amounts. = = = = =

  4. The possibilities are endless! Whole numbers can be decomposed as fractions or mixed numbers. 4 4 5 = = 1 = = 1 2 = =

  5. Mixed numbers like 1 can be decomposed into their individual parts. = + 1

  6. Forgetting to decompose. 4 - 1≠ 3 4 - 1 = 2 ≠

  7. I need to subtract I’ll cut just one cookie making two halves. 3 = 2 Mom says I can eat the cookies if I give my sister of a cookie. I don’t want to cut all the cookies. Think about cookies. - 2 cookies Now I have 2 + I can easily subtract .

  8. This works with a fraction bar model. = 2 3 1 =- - 1 2

  9. This works with mixed numbers. 2 = 1 = 2 = 1 + + I need to subtract from 2 I need to decompose into more pieces. I need to take away one half, but the minuend isn’t divided in halves. When one denominator is a divisor of the other, only one fraction has to be changed. I will use an equivalent fraction. = I will decompose one of the wholes into . = 1 = - - = 1 = 1

  10. 3 - 1 I need to subtract 1 1 = 2 3 1 - 1 = - 1 I need to decompose one of the wholes into . 1

  11. In this lessonyou have learned how to subtract with fractions or mixed numbersby decomposing.

More Related