# Order of operations

### Khaushl and Pranav

## please excuse my dear aunt Sally . WHAT IS THIS USED FOR ?

The first letters in each word of the phrase means something and what order it goes in. EX: The P in please must be done first or else you fail the question. The order is p in please first. Then the e in excuse . After that the m for my or the d for dear , which ever comes first in the expression. Finally , the a for aunt or the s for sally , which ever one comes first in the expression.

## The p in please, what does it mean?

## The e in excuse , what I means ?

## The m in my and the d in dear. What do they mean ?

## The A aunt and the S in Sally what do they mean?

## Step by step

Here's a problem.

15+17 +( 42 - 8)

First subtract 42-8 because it's in parentheses. That equals 34.

Then add 15+17 because it comes before 17+34. The answer for 15+17 = 32

Then add 32 with 34. The answer is 66. That is the answer. But if you noticed the parentheses changed the entire problem if the parentheses were not there you would add 15 with 17 then add 42 and subtract 8. This is the power of parentheses!

A blendspace you can learn a lot from.