# What types of numbers exist and how do we use them? Jennifer Barr
Get Started. It's Free What types of numbers exist and how do we use them? ## 2. What are rational numbers and how are they used in the real world?

### 2.1. How are they represented on a number line?

2.1.1. How can number lines help to compare, order, or interpret numbers?

2.1.2. How does moving up, down, left, right affect the value of the number?

2.1.3. How does zero fit with other numbers, what does it mean?

### 2.2. What are coordinates and how are they used to map locations?

2.2.1. How do you know where to plot a point?

2.2.2. How can you find the distance between two points?

## 3. What is the absolute value and how can it be used to solve problems?

### 3.1. Understand that the positive and negative value of a number are opposites.

3.1.1. How are reflections related to opposites?

### 3.3. Describe absolute value as the magnitude of its number.

3.3.1. The further a number is from zero, the greater its absolute value.