Find all School-related info fast with the new School-Specific MBA Forum

It is currently 31 Oct 2014, 09:59

Today

Waiting for Decisions? Join us in the chat | All GMAT Club Tests are Free and Open


Close

GMAT Club Daily Prep

Thank you for using the timer - this advanced tool can estimate your performance and suggest more practice questions. We have subscribed you to Daily Prep Questions via email.

Customized
for You

we will pick new questions that match your level based on your Timer History

Track
Your Progress

every week, we’ll send you an estimated GMAT score based on your performance

Practice
Pays

we will pick new questions that match your level based on your Timer History

Not interested in getting valuable practice questions and articles delivered to your email? No problem, unsubscribe here.

Events & Promotions

Events & Promotions in June
Open Detailed Calendar

Quick Division to get three decimal place precision

  Question banks Downloads My Bookmarks Reviews Important topics  
Author Message
Intern
Intern
avatar
Joined: 27 May 2012
Posts: 9
GMAT Date: 05-17-2012
Followers: 0

Kudos [?]: 0 [0], given: 1

Quick Division to get three decimal place precision [#permalink] New post 09 Jul 2012, 02:49
Hi all,

In most of the PS questions I am able to solve in the fractional format. But takes time to convert that fractional part into decimal.
For example, 26/27 is approximated to 0.963

Please suggest ways to get the decimal solution in a very little time.

Thanks,
FKA
Intern
Intern
avatar
Joined: 27 Apr 2012
Posts: 10
Location: India
Concentration: General Management, Organizational Behavior
GMAT Date: 11-21-2012
WE: Consulting (Consulting)
Followers: 1

Kudos [?]: 7 [0], given: 7

Re: Quick Division to get three decimal place precision [#permalink] New post 09 Jul 2012, 03:17
One way is that u can learn values of fraction till 20. i.e.1/1=1; 1/2=0.5, 1/3= 0.33,1/4=0.25; 1/5=0.20, 1/6=0.1666, 1/7=0.1428, 1/8=0.125, 1/9=0.111, 1/10=0.10, 1/11=0.0909,1/12=0.083, 1/13=0.0769, 1/14=0.0714, 1/15=0.06666, 1/16=0.0625,1/17=0.0588, 1/18=0.0555, 1/19=0.0526, 1/20 = 0.05...

Now convert your fraction it this form.
26/27= 26* 1/9 * 1/3 = 26*0.33*0.11; I consider multiplication always easier than division; Also use approximation to eliminate other choices...









25% 0.25 1/4
331/3% 0.333... 1/3
50% 0.5 1/2
75% 0.75 3/4
80% 0.8 4/5
Senior Manager
Senior Manager
User avatar
Status: Juggg..Jugggg Go!
Joined: 11 May 2012
Posts: 254
Location: India
GC Meter: A.W.E.S.O.M.E
Concentration: Entrepreneurship, General Management
GMAT 1: 620 Q46 V30
GMAT 2: 720 Q50 V38
Followers: 4

Kudos [?]: 30 [0], given: 239

Reviews Badge
Re: Quick Division to get three decimal place precision [#permalink] New post 09 Jul 2012, 03:21
Depends on what you are looking for. For the above example, you could say it is .9 just by looking at it and also you can tell its closer to 1 THAN .9. This level is more than sufficient to crack GMAT questions. :)
GMAT doesn't really need intense calculations. An approximate value is more than enough.

Even in IR Section, most of the questions can be done without a calculator
_________________

You haven't failed, if you haven't given up!
---
bschooladmit
Visit my Blog www.bschooladmit.wordpress.com

Check out my other posts:
Bschool Deadlines 2013-2014 | Bschool Admission Events 2013 Start your GMAT Prep with Stacey Koprince | Get a head start in MBA finance

Re: Quick Division to get three decimal place precision   [#permalink] 09 Jul 2012, 03:21
    Similar topics Author Replies Last post
Similar
Topics:
1 Long division Decimal problem HarvardSean 1 19 Dec 2013, 06:26
4 Experts publish their posts in the topic Rounded to three decimal places, 1.002^4 = emmak 3 16 Apr 2013, 05:13
Experts publish their posts in the topic Different scenerios for division/mult and decimal place? manimgoindowndown 2 08 Apr 2013, 16:31
1 Simple and quick divisibility test for 7 Vishwa25 4 05 Feb 2013, 23:27
1 Quick way for sqrts/cubes w/ decimals? samdiesel 7 09 Dec 2009, 18:45
Display posts from previous: Sort by

Quick Division to get three decimal place precision

  Question banks Downloads My Bookmarks Reviews Important topics  

Moderators: bagdbmba, WaterFlowsUp



cron

GMAT Club MBA Forum Home| About| Privacy Policy| Terms and Conditions| GMAT Club Rules| Contact| Sitemap

Powered by phpBB © phpBB Group and phpBB SEO

Kindly note that the GMAT® test is a registered trademark of the Graduate Management Admission Council®, and this site has neither been reviewed nor endorsed by GMAC®.