NEW HERE? LEARN MORE
closeclose
Last visit was: 27 Apr 2024, 21:31 It is currently 27 Apr 2024, 21:31
Decision Tracker
My Rewards
New posts
New comers' posts

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.
Go to My Error Log Learn more
Close
Request Expert Reply
Confirm Cancel

GMAT Multiplication Tables

SORT BY:
Date
Kudos
Tags:
Find Similar Topics 
Show Tags
Hide Tags
User avatar
toughmat
Manager
Manager
Joined: 19 Apr 2011
Posts: 59
Own Kudos [?]: 9 [0]
Given Kudos: 2
Send PM
Re: GMAT Multiplication Tables [#permalink] New post   01 Jun 2011, 06:11
but we need memorize this right. There is no shortcut
User avatar
B
walker
SVP
SVP
Joined: 17 Nov 2007
Posts: 2408
Own Kudos [?]: 10038 [3]
Given Kudos: 361
Concentration: Entrepreneurship, Other
Schools: Chicago (Booth) - Class of 2011
GMAT 1: 750 Q50 V40
Send PM
GMAT ToolKit User
Re: GMAT Multiplication Tables [#permalink] New post   01 Jun 2011, 07:18
3
Kudos
Expert Reply
I'm not sure you need to memorize all those numbers except squares. It's better to have shortcuts for multiplication. For example, It's not easy to calculate 18*12 mentally but 18*10 + 18*2 = 180 + 36 = 216 is pretty manageable. Or let's say 15*14? 15*14=30*7=210. Or 19*13? 20*13-13 = 260-13 = 247
As you see a couple of little tricks can help.

By the way, something very interesting is now under development in GMAT ToolKit that's going to address the problem.
User avatar
L
IanStewart
GMAT Tutor
Joined: 24 Jun 2008
Posts: 4128
Own Kudos [?]: 9247 [0]
Given Kudos: 91
 Q51  V47
Send PM
Re: GMAT Multiplication Tables [#permalink] New post   01 Jun 2011, 09:33
Expert Reply
The GMAT is not going to ask you to multiply 23 by 29, so you don't need to learn the table above; that would just be a waste of time. You should know your times table from grade school (up to 12x12), and maybe up to 13*13 since the number 13 shows up for a few reasons, and you may want to know some larger perfect squares. You don't need to know what 19 times 26 is off the top of your head; that just won't ever show up on your test (or if it did, you could use estimation or units digits to bypass the calculation completely).
avatar
arrypotter
Intern
Intern
Joined: 11 Aug 2007
Posts: 2
Own Kudos [?]: 4 [4]
Given Kudos: 0
Send PM
Re: GMAT Multiplication Tables [#permalink] New post   01 Jun 2011, 20:57
4
Kudos
toughmat wrote:
but we need memorize this right. There is no shortcut


If I may add to others view.

regarding memorizing the tables, it does save time if you memorize. I know it doesnt happen overnight, but there is a way. For instance, I took all the numbers and started singing a song (From a bollywood movie - will upload the movie one day :) ) . That does work. My mum used to teach me multiplication tables that way.

If memorizing isnt your cup of tea, the second best way to sort this out is to used vedic maths 2 number multiplication

23
* 45 (put it one below another)
-------------------
multiply left most | multiply diagonal | multiply right most
2*4 | 2*5 + 3 * 4 | 3 * 5

8 | 22 | 15

carry over digits from right to left

8 | 22 +1 |5 => 8 | 23 | 5
8 + 2 | 3 | 5
10 | 3 | 5

Answer is 1035

Regards
Arvind
User avatar
bumpbot
Non-Human User
Joined: 09 Sep 2013
Posts: 32715
Own Kudos [?]: 822 [0]
Given Kudos: 0
Send PM
Re: GMAT Multiplication Tables [#permalink] New post   21 Sep 2022, 05:35
Hello from the GMAT Club BumpBot!

Thanks to another GMAT Club member, I have just discovered this valuable topic, yet it had no discussion for over a year. I am now bumping it up - doing my job. I think you may find it valuable (esp those replies with Kudos).

Want to see all other topics I dig out? Follow me (click follow button on profile). You will receive a summary of all topics I bump in your profile area as well as via email.
GMAT Club Bot
gmatclubot
Re: GMAT Multiplication Tables [#permalink]
21 Sep 2022, 05:35
Moderator:
Bunuel
Math Expert
92959 posts

Powered by phpBB © phpBB Group | Emoji artwork provided by EmojiOne
Main navigation
GMAT Resources
Partners
MBA Resources
www.gmac.com|www.mba.com | | GMAT Club Rules | Terms and Conditions