How to Divide Mixed Numbers by Whole Numbers

Math with Mr. J

This instructional video provides a clear, step-by-step demonstration of how to divide a mixed number by a whole number. Mr. J, the narrator, guides viewers through a specific example problem: 5 and 4/9 divided by 3. The video breaks down the process into manageable procedural chunks, emphasizing the importance of converting terms into fractional form before performing operations. The content covers key mathematical procedures including converting mixed numbers to improper fractions, writing whole numbers as fractions with a denominator of 1, and applying the "Keep, Switch, Flip" method (multiplying by the reciprocal) to solve division problems. It also demonstrates how to convert the resulting improper fraction back into a mixed number and check for simplification. This resource is highly valuable for upper elementary and middle school mathematics classrooms. It serves as an excellent direct instruction tool for introducing the concept or as a review resource for students struggling with fraction operations. Teachers can use it to support lessons on the number system, fraction arithmetic, and procedural fluency in dividing rational numbers.