What does pemdas

Additionally, on Quizlet you are able to not only have flashcards, but also tests and memorization games. You can set up a Quizlet account at this website. If you are a person who is creative with their words, try making an acronym out of the first letters of your important concepts, like PEMDAS in math Parentheses, Exponents, Multiplication, Division, Addition, Subtraction.

To help you memorize, put your study topic to the tune of your favorite song. This memorization tactic is convenient because it can be practiced from anywhere at anytime. In mathematics, there is something called the order of operations , which is a rule for solving math problems that have more than one operation adding, subtracting, multiplying, etc. When studying math and learning how to correctly use the order of operations, many people rely on a common mnemonic known as PEMDAS as a memory aid for remembering the order of operations.

These operations are meant to be performed from left to right, where the left-most operation is performed first. These key nuances are highlighted in the sample section below. However, PEMDAS is not a perfect mnemonic for remembering how to correctly perform the order of operations , but it can be a useful tool proved that you remember a few extremely important nuances:.

It is one thing to remember the order of operations, and a completely task to know how to use it to solve math problems correctly. Solve what is inside the parentheses first. Just like the last example, solve what is inside the parentheses first. So we do that before we do any addition or subtraction. So we want to do the 3 times 3 before we add the 7. So this is going to be 7 plus-- and the 3 times 3 we want to do first. We want to do the multiplication first.

That's going to be in the orange parentheses. And then you have the 7 times 2 plus that, on the left hand side. You have the divided by 4 times 2 on the right hand side.

And now this-- the thing in parentheses-- because we still want to do the parentheses first. Pretty easy to evaluate. What's 7 plus 9? And so everything we have simplifies to 7 times 2 plus 16 divided by 4 times 2.

We have no E, no exponents in this. So then we go straight to multiplication and division. We have a multiplication-- we have some multiplication going on there.

We have some division going on here, and a multiplication there. So we should do these next, before we do this addition right there. So we could do this multiplication. We could do that multiplication. We're going to wait to do that addition. And then here we have a 16 divided by 4 times 2. That gets priority of the addition, so we're going to do that before we do the addition. But how do we evaluate that? Do we do the division first, or the multiplication first? And remember, I told you in the last video, when you have when you have multiple operations of the same level-- in this case, division and multiplication-- they're at the same level.

You're safest going left to right. Or you should go left to right. So you do 16 divided by 4 is 4. So this thing right here-- simplify 16 divided by 4 times 2. It simplifies to 4 times 2. That's this thing in green right there. And then we're going to want to do the multiplication next. So this is going to simplify to-- because multiplication takes priority over addition-- this simplifies to 8.