**Duration**: 55 Minutes

**Goal**:

To better understanding what the binary system is, how it is used, and how to use it.

**Objectives**:

- Students will be able to identify binary numbers and what they represent.
- Students will be able to write out and decode binary numbers.

### Binary Numbers

Binary numbers are base 2 numbers, and have only two values – **0 and 1.**

If we look at a binary number like 1011, then we can again assign column values as we did with our decimal number, but this time we use 2, and not 10 as the base.

So binary **1011** binary has 1 in the 1s column, 1 in the 2s column and 0 in the 4s column, and 1 in the 8s column.

### Therefore 1011 equals 11

Binary Numbers on Math Is Fun