My Math Forum Can you solve this math test?

 Elementary Math Fractions, Percentages, Word Problems, Equations, Inequations, Factorization, Expansion

 June 30th, 2019, 06:18 PM #1 Newbie   Joined: Jun 2019 From: New York Posts: 23 Thanks: 0 Can you solve this math test? A) 3 + 3 × 3 - 3 + 3=? B) 3 + 3 × (3 - 3) ÷ 3=? Is the answer for both A & B the same? Sent from my SM-J727T1 using Tapatalk Last edited by skipjack; July 1st, 2019 at 04:10 PM.
June 30th, 2019, 06:29 PM   #2
Math Team

Joined: Jul 2011
From: Texas

Posts: 3,002
Thanks: 1587

Quote:
 Originally Posted by NinjaX3 Is the answer for both A & B the same?
No

 June 30th, 2019, 07:33 PM #3 Math Team     Joined: May 2013 From: The Astral plane Posts: 2,256 Thanks: 926 Math Focus: Wibbly wobbly timey-wimey stuff. See here for order of operations. The reason this is so hard for many is that High School teachers (I don't know about Middle School) have tended to get away from using parenthesis properly. For example you often see on the different forums something like this: f(x)= 2x + 3/8x - 5. This is intended to be f(x) = (2x + 3)/(8x - 5), but as written is $\displaystyle f(x) = 2x + \dfrac{3}{8} x - 5$ instead of $\displaystyle f(x) = \dfrac{2x + 3}{8x - 5}$. I'm not blaming just the instructors... the students should be picking up on this as well. -Dan Thanks from Joppy
July 1st, 2019, 02:28 AM   #4
Newbie

Joined: Jun 2019
From: New York

Posts: 23
Thanks: 0

Quote:
 Originally Posted by topsquark See here for order of operations. The reason this is so hard for many is that High School teachers (I don't know about Middle School) have tended to get away from using parenthesis properly. For example you often see on the different forums something like this: f(x)= 2x + 3/8x - 5. This is intended to be f(x) = (2x + 3)/(8x - 5), but as written is $\displaystyle f(x) = 2x + \dfrac{3}{8} x - 5$ instead of $\displaystyle f(x) = \dfrac{2x + 3}{8x - 5}$. I'm not blaming just the instructors... the students should be picking up on this as well. -Dan
You are right. I have noticed this problem beginning in middle school, which then leaks into high school. With this continuing, it causes a snowball effect.

Sent from my SM-J727T1 using Tapatalk

Last edited by skipjack; July 1st, 2019 at 04:56 AM.

July 2nd, 2019, 02:06 PM   #5
Member

Joined: Jun 2019
From: AZ, Seattle, San Diego

Posts: 30
Thanks: 21

Quote:
 Originally Posted by NinjaX3 Can you solve this math test?
Why are you posting tests on the General Math forum?

 July 2nd, 2019, 02:09 PM #6 Newbie   Joined: Jun 2019 From: New York Posts: 23 Thanks: 0 Hello, since I am new, where would be the best place to post questions? Sent from my SM-J727T1 using Tapatalk
July 2nd, 2019, 04:55 PM   #7
Senior Member

Joined: Sep 2015
From: USA

Posts: 2,529
Thanks: 1389

Quote:
 Originally Posted by NinjaX3 Hello, since I am new, where would be the best place to post questions? Sent from my SM-J727T1 using Tapatalk
new....

please, you must think we're idiots

 July 3rd, 2019, 12:51 AM #8 Global Moderator   Joined: Dec 2006 Posts: 20,919 Thanks: 2203 Moved to Elementary Math. Thanks from topsquark
July 3rd, 2019, 02:05 PM   #9
Member

Joined: Jun 2019
From: AZ, Seattle, San Diego

Posts: 30
Thanks: 21

Quote:
 Originally Posted by NinjaX3 … where would be the best place to post [such] questions?
In Volume XXVIII of your notes.

 Tags math, solve, test

 Thread Tools Display Modes Linear Mode

 Similar Threads Thread Thread Starter Forum Replies Last Post ekp1977 Calculus 1 December 1st, 2015 10:03 AM dorkster90 Advanced Statistics 1 November 27th, 2014 08:03 PM BradSteeves Algebra 1 January 6th, 2010 08:19 PM hbollant Algebra 3 October 30th, 2009 06:37 AM

 Contact - Home - Forums - Cryptocurrency Forum - Top