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### Course: Grade 6 (VA SOL)>Unit 2

Lesson 9: Intro to order of operations

# Order of operations introduction

The order of operations is a crucial math concept that ensures consistent results when solving problems with multiple operations. By following PEMDAS (Parentheses, Exponents, Multiplication and Division, and Addition and Subtraction), students can accurately evaluate expressions and avoid common mistakes. Mastering this skill is essential for success in mathematics. Created by Sal Khan.

## Want to join the conversation?

first, 5 x 2 = 10.
Then, 10 + 3 = 13
• Good job! 👍
• Wouldn't it be addition before subtraction to make the last answer 17?
• If you want to do addition first, you would have 20-2+1, but -2+1=-1, so 20-1=19.
• I dont get it can someone explain?
• Hi! Don't worry, once you read this comment you might be able to understand.

So, most people when doing a problem with multiple operations, they tend to do the wrong operations first, and they get the wrong answer.

Order of operations is used to find the correct Order the operations you do first so that when you do them, you get the correct answer. Let me show you an example:

4 x 5 + 8 - 3
Order of operations says
Parenthesis
Expontents
Multiplication
Division
Subtraction.

We don't see parenthesis or exponents, but we do see multiplication. So, 4 x 5 =20. No division, but there is addition and subtraction. So,
20 + 8 = 28, 28 - 3 = 25.

You got this and don't give up! 😊
• I learned Pemdas in like, 5th grade
• I learned it in fourth what state/county are you in, only so I know what district taught fifth
• pemdas is easy
• I have all the questions.
• This video is a banger
• 25 is it 25
• So is 10/5*2 = 1 or 4 (ie. does left to right rule mentioned for +/- apply?) and what about square root etc? (assuming it to be the opposite function of an exponent). This topic has always seemes incomplete and confusing to me.
BODMAS = 'O' is for operations (could assume operations to be exponents and roots only but again, assume left to right or exponents then roots?)and division comes before multiplication in this one.
PEMDAS = specifies exponents but not roots and multiplication comes before division.
• Those acronyms do not suggest a specific order for multiplication, division, addition and subtraction! Their order is that way just so it rolls off the tongue well and is easier to remember.
Since multiplication and division are inverse operations, same with addition and subtraction, each can be done left-to-right in a "same-operation chain", so long as you always do M or D before A or S.
SO, 10/5*2 = 2*2 = 4
• Another (easier) way that you can remember "PEMDAS" is to remember it like "BEDMAS". (Brackets, Exponents, Division, Multiplication, Addition, and subtraction.) Hope this helps!
I didn't make that up, it's just another way