**Today’s Question of the Day:**

Have you ever had a problem like this?

`Simplify 1 + 4 * 3 / 2 - 5`

Do you ever find it confusing whether to add to multiply first? Or just don’t know where to start?

To simplify in the correct order, we use **PEMDAS**, which stands for:

__ P__arentheses

__xponents__

**E**__ultiplication__

**M**__ivision__

**D**__ddition__

**A**__ubtraction__

**S**Let’s go through the list and try it out!

First is __ P__arentheses. We skip this one since there are no parentheses in our problem.

Second is __ E__xponents. We again skip.

Third is __ M__ultiplication.

`Simplify 1 + `**4 * 3** / 2 - 5

We multiply 4 and 3 to get

**12**.

Fourth is __ D__ivision.

`Simplify 1 + `**12 / 2** - 5

We divide 12 and 2 to get

**6**.

Fifth is __ A__ddition.

`Simplify `**1 + 6** - 5

We add 1 and 6 to get

**7**.

Last is __ S__ubtraction.

`Simplify `**7 - 5**

We subtract 5 from 7 to get

**2**.

Wasn’t that easy?

*** Side Learning ***

What is the difference between an equation and an expression? The simple answer is that equations have an equal sign (“=”) and an expression does not. For example,

Equation: `1 + 3 `

**=** 4

Expression: `1 + 3`

So, was the question of the day an expression or an equation?