Dividing Fractions Using Keep Change Flip

The Organic Chemistry Tutor

This concise mathematics tutorial demonstrates the standard algorithm for dividing fractions, known as the "Keep, Change, Flip" method. The video walks viewers through two distinct examples. The first example (2/3 ÷ 1/5) establishes the basic procedure of keeping the first fraction, changing division to multiplication, and finding the reciprocal of the second fraction. The narrator explains how to multiply across the numerators and denominators to find the solution, briefly touching upon improper fractions. The second example (4/5 ÷ 3/5) introduces an efficiency step: cross-simplification (canceling). The narrator demonstrates how to identify common factors in the numerator and denominator across the multiplication sign to simplify the problem before calculating the final product. This scaffolding helps students move from basic procedural understanding to more efficient calculation strategies. For educators, this video serves as an excellent direct instruction tool or review resource for 5th through 7th-grade mathematics. It isolates the specific skill of dividing fractions without extraneous information, making it perfect for students who need a quick refresher or for parents supporting homework. The clear visual contrast of white writing on a black background helps focus attention on the mathematical steps being performed.