7.NS.A.1.c: Understand subtraction of rational numbers as adding the additive inverse, p - q = p + (-q). Show that the distance between two rational numbers on the number line is the absolute value of their difference, and apply this principle in real-world contexts.
Students will learn how to find the distance between two numbers on the number line. This is done by finding the absolute difference of the two numbers. Before learning this, students should know the absolute value of some number \(x,\) is the distance between \(x\) and \(0\) on the number line.