Addition and multiplication of whole numbers is commutative and associative. These are simple properties of whole numbers that can help us find solutions to long calculations in a very simple manner. Let's see how!
Here we will learn how to draw a number line that starts with zero, and we will understand ways to multiply and add two numbers on this line. We will also look into some examples concerning money and distance.
All video content by Khan Academy is under their license: CC by NC SA
Website created using Khan Academy Static Downloader