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# Order of operations

5 videos
1 skill
If you have the expression "3 + 4 x 5", do you add the 3 to the 4 first or multiply the 4 and 5 first? To clear up confusion here, the math world has defined which operation should get priority over others. This is super important. You won't really be able to do any involved math if you don't get this clear. But don't worry, this tutorial has your back.

### Introduction to order of operations

VIDEO 9:40 minutes
This example clarifies the purpose of order of operations: to have ONE way to interpret a mathamaical statement.

### Order of operations example

VIDEO 4:27 minutes
We're throwing everything but the kitchen sink in this one: addition, subtraction, multiplication, and division. Better remember your order of operations, ya hear!

### Order of operations example: putting it all together

VIDEO 4:36 minutes
Let's simplify this tricky expression according to the order of operations. Remember: PEMDAS!

### Order of operations: PEMDAS

VIDEO 5:20 minutes
Have you heard of PEMDAS? No, it's not some fatal illness. We'll explain here and challenge you with a more complicated example.

### Order of operations, more examples

VIDEO 14:23 minutes
Here we have a series of order of operations problems demonstrated in succession so you can really nail down this concept.

### Order of operations with negative numbers

PRACTICE PROBLEMS