Khan Academy
Khan Academy: Negative Numbers, Variables, Number Line
Given a, b, and c shown on the number line, Sal determines if statements like -b < c are true. [4:54]
Virtual Nerd
Virtual Nerd: How Do You Order Fractions and Decimals From Greatest to Least?
It's easier to compare different types of numbers if they all are converted to one type of number. This tutorial gives an example of this involving fractions and decimals. [3:37]
Virtual Nerd
Virtual Nerd: How Do You Find a Rational Number Between Two Fractions?
This tutorial shows you how to find rational numbers between two rational numbers. [3:24]
Virtual Nerd
Virtual Nerd: How Do You Put Real Numbers in Order?
To make comparing numbers easier, convert all the numbers to decimals. Then, plot those decimals on a number line and compare them. This tutorial shows you how to order numbers. [6:09]