How to Subtract Fractions with Unlike Denominators

MatholiaChannel

This instructional video provides a clear, step-by-step guide on how to subtract fractions with unlike denominators. Through three distinct examples of increasing numerical complexity, the narrator demonstrates the complete process: identifying that denominators differ, finding equivalent fractions to create common denominators, performing the subtraction, and finally simplifying the result to its lowest terms. The video introduces key mathematical terminology such as "unlike fractions," "like fractions," "equivalent fraction," "numerator," and "denominator." It uses a clean visual style with a "yellow sticky note" sidebar to show the side calculations required for converting fractions and simplifying answers, separating the main equation from the working steps. This resource is highly valuable for elementary and middle school mathematics classrooms as a direct instruction tool or review aid. It reinforces the standard algorithm for fraction subtraction and emphasizes the critical importance of simplification. Teachers can use this video to model the procedural thinking required for fraction operations, specifically targeting Common Core standards related to operations with fractions.