Okay Math Geniusues... What's 48÷2(9+3) ?

[BabyGirl Rosie]

Here is the math teachers answer. Lol. Let me tell you I did send a text to two other math teacher and we all have the same answer. We came up with 288.

48 / 2(9 + 3)
Grouping symbols first
48/ 2 (12)
Then 48/2 which is 24 then times 12.
Answer is 288!

So, here is the math teachers answers!!

[JeanieK]

Originally Posted by BabyGirl Rosie

Here is the math teachers answer. Lol. Let me tell you I did send a text to two other math teacher and we all have the same answer. We came up with 288.

48 / 2(9 + 3)
Grouping symbols first
48/ 2 (12)
Then 48/2 which is 24 then times 12.
Answer is 288!

So, here is the math teachers answers!!

My degree is in accounting, but I didn't want to play that card. thanks for verifying.

[BabyGirl Rosie]

Originally Posted by JeanieK

My degree is in accounting, but I didn't want to play that card. thanks for verifying.

Ha ha! Well I wasn't about to post until I verified with others. Order of operations is very easy to make mistakes. I do it with my students every year. I post a problem and will end up with at least 4 different answers. I kept thinking it was 288 but wanted to ask around before I posted!

[JMuedog]

Originally Posted by linz06

I believe the answer is 288..

48÷2(9+3)

48 ÷ 2 x (9+3)

48 ÷ 2 x 12

24 x 12

=288

After the parentheses, there is only multiplication and division left to do, and they follow left to right.

This is how I'd do it. Man, I need a math refresher. I tried long division he other day and it wasn't easy.

What's the answer?

[TxVicki]

And this is why I was never good in math. LOL Over my head.

[MyTrixie143]

Well by doing math how I was taught I came up with 288 as well. Parentheses comes first. Division and multiplication are equal there is no set order for them. So after the parentheses you go left to right to solve it.

Interesting, I will have to get out my old math book to see which is right. I could ask my brother who has a degree in accounting and is a Math teacher.

[JeanieK]

Originally Posted by MyTrixie143

Well by doing math how I was taught I came up with 288 as well. Parentheses comes first. Division and multiplication are equal there is no set order for them. So after the parentheses you go left to right to solve it.

Interesting, I will have to get out my old math book to see which is right. I could ask my brother who has a degree in accounting and is a Math teacher.

You did it right.

[lisaly]

Originally Posted by MyTrixie143

Well by doing math how I was taught I came up with 288 as well. Parentheses comes first. Division and multiplication are equal there is no set order for them. So after the parentheses you go left to right to solve it.

Interesting, I will have to get out my old math book to see which is right. I could ask my brother who has a degree in accounting and is a Math teacher.

That''s how I solved it, and I came up with 288 also.

[MyTrixie143]

Originally Posted by JeanieK

You did it right.

Thanks, I thought I did it right. It's only been 2 years since I've been out of college and took math courses. I didn't think I was that rusty.

[ArmaniMan]

It is 288. When people do PEMDAS, they forget that MD and then AS are done left to right.

[AllDogBoots]

Originally Posted by ArmaniMan

It is 288. When people do PEMDAS, they forget that MD and then AS are done left to right.

I solved the math problem but have no idea what you just said

[lisaly]

Originally Posted by AllDogBoots

I solved the math problem but have no idea what you just said

PEMDAS--order of operations
Parenthesis first, next exponents, multiplication or division (solve left to right), then addition or subtraction (also left to right).

MD multiplication or division, whichever comes first
AS addition or subtraction, again left to right

[kjc]

2 bc you have to get rid of the parentheses before you do the left to right ops.

48/2(9+3)
48/2(12)
48/24
2

[Ellie May]

Okay, if M and D are equal, then it makes sense why it would be done left to right , but:

48/2(9+3)
48/2(12)
We still haven't gotten rid of the parentheses. So we can just pull 12 out and make it read 48/2x12 and ignore that the 12 is still in the ()?

[MyTrixie143]

Originally Posted by kjc

2 bc you have to get rid of the parentheses before you do the left to right ops.

48/2(9+3)
48/2(12)
48/24
2

Ah by why did you multiply the 2x12 first? After the parentheses in this equation you work left to right. The parentheses around the 12 just means multiply that is the only reason it is still there, to tell you to multiply. Technically you got rid of the parentheses by adding the 9+3. So the equation technically looks like this: 48/2x12. Working from left to right you divide before you multiply hence coming up with 288.