Lumos Video Store
This page provides a list of educational videos related to Unlike Denominators. You can also use this page to find sample questions, apps, worksheets, lessons , infographics and presentations related to Unlike Denominators.
Subtracting fractions with unlike denominators
By Khan Academy
Learn how to subtract fractions like 4/3 and 1/5. Key idea: We must rewrite the fractions to have a common denominator before subtracting them.
Comparing Fractions With Different Denominators
By The Organic Chemistry Tutor
explains how to compare fractions with unlike / different denominators.
Adding and subtracting negative fractions
By Khan Academy
Add and subtract negative fractions with unlike denominators.
Adding fractions with 10 and 100 as denominators
By Khan Academy
A great way to learn how to add fractions with unlike denominators is to do so with denominators in units of 10 and 100. Like this...
Comparing fractions visually with a bar | Fractions | 4th grade | Khan Academy
By Khan Academy
Learn how to compare fractions with unlike denominators by drawing bars
Using visuals to add and subtract fractions with unlike denominators
By Khan Academy
Learn to subtract 3/4 - 5/8 using a fraction model for help.
Adding fractions with unlike denominators: word problem
By Khan Academy
We can do math problem all day long but to really understand math--you have to apply it. Let's apply adding fractions to this word problem.
Adding and subtracting mixed numbers with unlike denominators 1
By Khan Academy
Learn how to subtract 3 and 2/5 from 7 and 6/9.
Using visuals to add and subtract fractions with unlike denominators
By Khan Academy
Learn to add 5/6 + 1/4 using a fraction model for help.
Comparing Fractions | MathHelp.com
By MathHelp.com
MathHelp.com offers comprehensive College Algebra help with a teacher. Are you stuck in a College Algebra class with a bad teacher and a huge classroom? Take the matter into your own hands with our custom College Algebra course. You will get through college math in no time!
Adding and subtracting rational expressions 3 | Algebra II | Khan Academy
By Khan Academy
This Khan Academy video offers more information on how to add with unlike denominators and contains a few sample problems with a step-by-step walkthrough on solving these equations.
Multiplying Integers | MathHelp.com
By MathHelp.com
This lesson covers comparing fractions. Students learn to compare fractions with the same denominator, which are called like fractions, by comparing the numerators. For example, to compare 7/9 and 4/9, note that 7 is greater than 4, so 7/9 is greater than 4/9. Students also learn to compare fractions with the different denominators, which are called unlike fractions, by first finding a common denominator, then comparing the numerators. For example, to compare 1/2 and 1/3, first find a common denominator, or the Least Common Multiple of 2 and 3, which is 6. To get 6 in the denominator of 1/2, multiply the numerator and denominator by 3, to get 3/6. To get 6 in the denominator of 1/3, multiply the numerator and denominator by 2, to get 2/6. Next, compare 3/6 and 2/6. Note that 3 is greater than 2, so 3/6 is greater than 2/6, which means that 1/2 is greater than 1/3.
Repeated addition
By Khan Academy
Learn how to solve word problems by adding the same number many times.
Addition formulae Sin(A+B), Cos(A+B), Tan (A+B): ExamSolutions
By ExamSolutions
What are the addition formulae. To see the full index of tutorials go to ExamSolutions at http://www.examsolutions.co.uk
Matrix Addition - YouTube
By Joel Walkley
YouTube presents Matrix Addition, an educational video resource on math.
Applications of Vector Addition.avi
By AlRichards314
This video works through some examples of using vectors to model physical quantities including forces and velocities. This lesson was created for the Calculus and Vectors (MCV4U) in the province of Ontario, Canada.