This video uses a real world scenario to demonstrate how to add and subtract negative numbers. We will demonstrate how to solve: How many ferrets can I give away and still have a business of ferrets?

Originally released by Apperson, 2013. Streaming video file encoded with permission for digital streaming by Infobase on April 30, 2015.

What We Know vs. What We Need to Know (4:35); --How Do I Determine How Many Ferrets I have after a Day of Sales? (2:25); -- If I Buy and Sell, How Can I Determine My Number of Ferrets at any given Time? (3:43); -- If I Sell and Give Away More Than I Purchase, How Many Will I Have Left? (2:16); -- Solving the Big Question (3:05); .