# Arithmetic¶

Let’s look at some basic math:

```
>>> 2 + 2
4
```

Python has numbers and arithmetic, just like every other programming language.

You can add integers. You can add floating point numbers–programmer speak for decimal numbers.

```
>>> 2 + 2
4
>>> 1.4 + 2.25
3.65
```

You can subtract, multiply, and divide numbers.

```
>>> 4 - 2
2
>>> 2 * 3
6
>>> 4 / 2
2.0
>>> 3 / 2
1.5
```

If you want your integers to round-down you can use a double slash:

```
>>> 3 // 2
1
```

We can use double asterisks to raise a number to a power. For example, 2 to the 10th power is 1024:

```
>>> 2 ** 10
1024
```

## Time to Play! Math 👾¶

Open up your terminal window, type `python3`

and play! See what you can do with numbers. Try out some of the code below and see if you can guess what’s going on.

```
>>> round(1.5)
>>> round(2.5)
>>> 4 % 3
>>> 10 % 5
```