In this unit, you will learn about the real number system. The real numbers are the counting numbers, whole numbers, integers, rational numbers and irrational numbers. You will examine how these numbers are connected to each other.
You will also solve problems that have a definite order to them. It is important to become familiar with the accepted order of operations so that you can solve the problems in math correctly. Remember to work multiplication and division from left to right as one operation does not take priority over the other. The same is true with addition and subtraction; work these operations from left to right.
Numbers and Number Lines (05:28) 
