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Multiplying Fractions

Page history last edited by PBworks 16 years, 4 months ago

Multiplying Fractions!

 If you don't yet know what fractions are, then you should probably learn more about them first. Try this great site!   Fractions

You know how to add and subtract fractions, but now it's time to learn how to multiply them! You would probably think it would be harder, right? Wrong! When you add or subtract, the denominators have to be equal. Example:

  5

8

+ 2

8

= 7

8

.
The denominators have to be equal. This is not the case in multiplication. In multiplication, you multiply straight across, like this:

  3

 

4
× 7

11

= 21

44

First, multiply the 3 and the 7. That gives you 21, so 21 is your answer for the numerator. Then, you multiply 4 and 11, which gives you the answer for the denominator. Now you try!

5/7 x 1/2=?

 

If you said 5/14, you were right! You probably multiplied 5x1 and then 7x14, right? Ok, let's try another one.

 

10/13 x4/5

 

Did you say 40/65? You multiplied the 10x4 and 13x5. If you did you were partly right, but you still needed to simplify it.

 

You know, multiplying the numbers is only part of the work. If you get a number that can be simplified, you need to simplify them! But I'm not the expert on that. Try this page all about them!    Simplifying Fractions

 

 

If you think you've got it down, go to:

http://www.math.com/school/subject1/practice/S1U4L4/S1U4L4Pract.html

It's great practice.

 

Also, you should visist this wiki about Dividing Fractions. Good luck!

 

 

Comments (17)

Anonymous said

at 9:50 am on Nov 5, 2007

hi maya! i like your page. the thing is you might want to put in more examples. also, everything is all bunched together. you might want to fix that. anyways, good page.

Anonymous said

at 9:54 am on Nov 5, 2007

great page =) i think you should fix the spacing a bit because it's kind of confusing to read.

Anonymous said

at 9:55 am on Nov 5, 2007

Your page is good, but you might want to put more pictures and examples. as jenin said, everything is all bunched up and hard to read.
besides that, i like your page :D

Anonymous said

at 9:58 am on Nov 5, 2007

hey maya i like your page but i think you should put a little bit of more info on what multiplying fractions is or does:]

Anonymous said

at 1:08 pm on Nov 5, 2007

hey maya i like it just brighten it up a bit.

Anonymous said

at 1:12 pm on Nov 5, 2007

very good!!!

Anonymous said

at 2:37 pm on Nov 5, 2007

oooohh!!
i like!!
but maybe some pictures??

Anonymous said

at 2:42 pm on Nov 5, 2007

need more info like the colors

Anonymous said

at 2:52 pm on Nov 5, 2007

I liked your page maya... I think you should add mroe info, like examples.

Anonymous said

at 5:18 pm on Nov 5, 2007

Like everyone else says, you should put more pics/examples. You should also link your website to other wiki pages. For example, some people who are new to fractions might not know what they are. You can link the word "fractions" to a wiki page about fractions, so whoever's reading can just go to that page to learn about it.

Anonymous said

at 7:36 pm on Nov 5, 2007

You need some pics oh and also just really quick give a brief description on how to simplify them

Anonymous said

at 7:40 pm on Nov 5, 2007

great page you just should add more colors and examples! Otherwise it is great you could also add more pics to brighten everything up! i love it! <3

Anonymous said

at 10:11 pm on Nov 5, 2007

yur page is nice

Anonymous said

at 10:18 pm on Nov 5, 2007

Nice page, but I would capitalize the word "First" after your second picture.

Anonymous said

at 10:21 am on Nov 13, 2007

i used ur page as a link if its ok

Anonymous said

at 2:48 pm on Nov 13, 2007

oooooo00000hh!! i really like it!!
its sooo pretty
just like u!!
ahah weeeeeeeee

Anonymous said

at 5:47 pm on Nov 21, 2007

More examples would be helpful. Good internal links, but links out to more practice and information would also be helpful.
3 of 4 points
11 of 12 total project points

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