Cool math Lessons - How to Add and Subtract Fractions When the Denominators are Different

Your browser does not support the IFRAME tag.

Fractions: <12> How to Add and Subtract Fractions When the Denominators are Different (Page 2 of 3)

Let's do another one:

3/5 + 2/9

The LCM of 5 and 9 is 45... So our LCD is 45.

Subtraction works the same way.

The LCM of 11 and 22 is 22... So the LCD is 22.

We just need to change the .

Done!

Head on over to the next page to try some fraction practice problems...

<< Go back a page

Go to next page >>

The printing, distribution and/or downloading of these lessons is strictly prohibited.