www.khanacademy.org/math/arithmetic/fraction-arithmetic/arith-review-add-sub-fractions/e/adding_fractions

Practice adding fractions that have different denominators.

www.khanacademy.org/math/arithmetic/fraction-arithmetic/arith-review-add-sub-fractions/v/adding-small-fractions-with-unlike-denominators

The denominator of a fraction tells you the "size" of 1 piece, or how many pieces make up 1 whole unit. To add/subtract fractions, we need to have a common ...

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

How to Add and Subtract Fractions When the Denominators are Different. This is a bit tricky, but you'll think it's easy once you get used to it! Let's try this: 1/2 + 1/3.

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

Fun math practice! Improve your skills with free problems in 'Add fractions with unlike denominators' and thousands of other practice lessons.

www.wikihow.com/Add-Fractions-With-Unlike-Denominators

This can become even more complex when the fractions have different denominators, or bottom numbers. Still, adding fractions with unlike denominators is ...

learnzillion.com/lesson_plans/6861-add-fractions-with-unlike-denominators-by-creating-area-models

In this lesson you will learn how to add fractions with unlike denominators by creating area models.

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

In this lesson you will learn how to add and subtract fractions with unlike denominators.