Lesson: Basic Arithmetic - 15

Adding And Subtracting Fractions Using LCM

Before taking the practice question below you must remember how to find the LCM of two or more numbers. LCM is commonly used in addition and subtraction of fractions.

Video - Adding and Subtracting Fractions by LCM

Of course, often you don't have a common denominator. The old-fashioned way to add and subtract fractions with different denominators:

In school you were probably taught to find a common denominator for your two fractions, convert them, and then add or subtract. While this works, it's often not the quickest approach. Let's look at the fast way to add and subtract fractions.

Video Lesson - Adding Fraction with Different Denominator

Next to display next topic in the chapter.

The Math Fundamentals is a kick starter for all those who have just started considering a test as an option to pursue their higher degree program. It is an essential first step for those who haven't been in touch with basic Arithmetic for a long time and are still looking out for a test Preparation Course. It covers very basic fundamental concepts of Mathematics tested on the test such as Number Properties, Rules of Exponents & others.For those who haven't been in touch with the math basics, this is going to help them revisit all the jargon's necessary to be known to score good on the test's quant section.