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To add or subtract fractions, they must have the same denominator. If they do not, make the least common multiple of all of the denominators the new denominator. After adding or subtracting, reduce your answer.

When giving the fractions like denominators, whatever number you multiply the old denominator of a fraction by, you must also multiply it by the numerator.

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See Also:
Least Common Denominators

www.khanacademy.org/math/pre-algebra/fractions-pre-alg/fractions-unlike-denom-pre-alg/v/adding-fractions-with-unlike-denominators

www.khanacademy.org/math/pre-algebra/fractions-pre-alg/fractions-unlike-denom-pre-alg/e/adding_fractions

Practice

www.coolmath.com/prealgebra/01-fractions/fractions-12-adding-subtracting-different-denominators-01

This prealgebra lesson explains how to

math.about.com/od/fractions/ss/denom.htm

Like many other topics in math, there is usually more than one method to get to the desired results. Adding fractions and finding common demoninators is merely another example of this. Multiplying denominators to find common denominators . More »

www.helpwithfractions.com/adding-fractions-different-denominators/

Nov 3, 2014

www.ixl.com/math/grade-5/add-fractions-with-unlike-denominators

Fun math practice! Improve your skills with free problems in '

www.ask.com/youtube?q=Adding Fractions with Unlike Denominators&v=lKiR4BBt6TE

Sep 21, 2011 ... Add Fractions ! Printable worksheet here: https://docs.google.com/document/d/17t
-zMu-Y23tlErj9vzD7KKITwLHNyyuCVdXkdZdxgtI/edit This ...

www.mathplayground.com/howto_fractions_diffden.html

Math video teaches students how to

learnzillion.com/lesson_plans/8178-add-and-subtract-fractions-with-unlike-denominators

In this lesson you will learn how to

Popular Q&A

Q:
Adding fractions with unlike denominators ?

A:
16 and 8 both go into 16, so leave the 3/16 alone and multiply top and bottom of 7/8 by 2 getting 14/16. Then add the tops: 17/16. If you need to, change it to ...
Read More »

Source:
answers.yahoo.com

Q:
Adding fractions with unlike denominators ?

A:
When adding fractions , they must have the same denominator (number on the bottom). First you must find the least common denominator . 3/16 = 3 / (2*2*2*2) 7/8 = ...
Read More »

Source:
answers.yahoo.com

Q:
What is adding fractions with unlike denominators .

A:
I'm really sorry I've done this before but i just totally am thinking the same exact thing!
Read More »

Source:
www.answers.com

Q:
What is the rule for adding fractions with unlike denominators .

A:
You convert them, using equivalent fractions , so that they have the same denominator - a common multiple of the deniminators. Then the denominator of the sum is...
Read More »

Source:
www.answers.com

Q:
What is a written definition of adding fractions with unlike deno ...

A:
To add fractions with different denominators , rewrite the fractions using the LCD, add the numerators, and then simplify. !
Read More »

Source:
www.chacha.com