Khan Academy
Adding and Subtracting Fractions
This video shows how to add, subtract, and simplify fractions using a pie graph and an infinite blackboard. Once he has established the rule, Sal throws the viewer a curve ball with a fraction subtraction problem that results in a...
Khan Academy
How to Add Fractions that have Different Denominators, Fractions, Pre-Algebra
Your young mathematicians can solve this problem along with Sal. They will add 4/9 and 11/12 by finding a number that evenly divides both 9 and 12. Sal fully explains the process of finding a common denominator in an evident and...
Curated OER
How Do You Subtract Two Rational Expressions with Different Denominators?
Reinforce instruction on the least common denominator and subtracting rational expressions with this tutorial video. Learners can view this video in class or at home. Consider using this resource to supplement your lesson plan.
Curated OER
How Do You Add Fractions with Different Denominators?
You've got three fractions to add together. Wait! They have unlike denominators. So the first thing you have to do is find the least common denominator. Now multiply the terms so they all have the same denominator. Don't forget to...
Curated OER
How Do You Subtract Two Rational Expressions with the Same Denominator?
Rational expressions that are in the form of fractions. Yuk! The teacher demonstrates how to subtract one rational expression from the other when the expressions have a common denominator. Combine like terms and write it in simplest form.
Curated OER
How Do You Add Two Rational Expressions with the Same Denominator?
You have two algebraic fractions to add together so what do you do now? You say yippee because they have a common denominator. This means that all you have to do is combine the like terms in the numerators. This would be a good segment...
Curated OER
How Do You Add Fractions with Different Denominators?
You've got three fractions to add together. Wait! They have unlike denominators. So the first thing you have to do is find the least common denominator. Now multiply the terms so they all have the same denominator. Don't forget to...
Curated OER
How Do You Add Two Rational Expressions with Different Denominators?
Teach your class how to add two algebraic fractions with different denominators. The instructor in the video describes how to find the common denominator and demonstrates how to simplify the expression. A straightforward video, this...
Curated OER
How Do You Add Fractions with Variables?
Combine fractions that have unlike denominators and a variable. As usual the variable needs to get isolated. Then find the least common denominator so you can combine the fractions. Finally put it all back together.
Curated OER
How Do You Solve an Equation With Fractions With Different Denominators Using Addition?
Find the value of a variable in an equation that has fractions with unlike denominators. Use the addition property of equality first to isolate the variable. Then find the LCD and do the math to make the denominators the same. Now they...
Curated OER
How Do You Add Two Rational Expressions with Different Denominators?
Teach your class how to add two algebraic fractions with different denominators. The instructor in the video describes how to find the common denominator and demonstrates how to simplify the expression. A straightforward video, this...
Curated OER
How Do You Add Mixed Fractions with Different Denominators by Converting to Improper Fractions?
The first step in adding mixed numbers is to change them into improper fractions. Secondly, make sure the denominators are the same. If they are not the same, then find a common denominator. Make the proper conversions to the numerator...
Curated OER
How Do You Subtract Fractions with Variables?
Combining terms that have fraction coefficients means you have to use your prior knowledge of adding and subtracting fractions. Find the least common denominator so you can combine the fractions. Finally put it all back together.
Curated OER
What's the Least Common Denominator?
Help your class take on the least common denominator by providing them with this informational video. The video gives a definition of the least common denominator and includes an example using two algebraic fractions. This is definitely...
Curated OER
How Do You Find the Least Common Denominator of Two Rational Expressions?
Adding fractions that are in rational expression form? Do they have a common denominator? No? Well, then the least common denominator needs to be found. How is the least common denominator of rational expression found? Watch this video...
Curated OER
How Do You Solve a Rational Equation With No Solution?
You've got some algebraic fractions in an equation and their denominators are all different. Well, first you need to strategize. Then find the excluded values that make your denominator equal zero because we know the denominator cannot...
Curated OER
What's the Least Common Denominator?
Help your class take on the least common denominator by providing them with this informational video. The video gives a definition of the least common denominator and includes an example using 2 algebraic fractions. This is definitely a...
Curated OER
How Do You Solve a Rational Equation With Binomials in the Denominator?
You've got some algebraic fractions in an equation and their denominators are all different. Well, first you need to strategize. Then find the excluded values that make your denominator equal zero because we know the denominator cannot...
Curated OER
How Do You Simplify a Mixed Expression Over a Mixed Expression?
You will need to pay close attention while watching this video. There are many steps and many operations to do to simplify this algebraic fraction. If it seems hard the first time you watch it and you miss something, then watch it again....
Math Mammoth
Math Mammoth: Adding Unlike Fractions
In a gradual release of responsibility fashion, this video teaches students first how to add unlike fractions using a visual model where the common denominator is stated, then how to add them in the same way without a visual model, then...
Khan Academy
Khan Academy: Arithmetic and Pre Algebra: Adding and Subtracting Fractions
This video shows how to add and subtract fractions with like and unlike denominators. Practice problems are available. [9:49]
Khan Academy
Khan Academy: Adding & Subtracting Fractions
Add and subtract negative fractions with unlike denominators.
Khan Academy
Khan Academy: Visually Subtracting Fractions: 3/4 5/8
A video explaining how to subtract fractions. [3:45]
Khan Academy
Khan Academy: Adding Mixed Numbers Word Problem
his video showing how to add two mixed numbers with unlike denominators in the context of a word problem.