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.

It appears that you are browsing the GMAT Club forum unregistered!

Signing up is free, quick, and confidential.
Join other 500,000 members and get the full benefits of GMAT Club

Registration gives you:

Tests

Take 11 tests and quizzes from GMAT Club and leading GMAT prep companies such as Manhattan GMAT,
Knewton, and others. All are free for GMAT Club members.

Applicant Stats

View detailed applicant stats such as GPA, GMAT score, work experience, location, application
status, and more

Books/Downloads

Download thousands of study notes,
question collections, GMAT Club’s
Grammar and Math books.
All are free!

Thank you for using the timer!
We noticed you are actually not timing your practice. Click the START button first next time you use the timer.
There are many benefits to timing your practice, including:

This topic is locked. If you want to discuss this question please re-post it in the respective forum.

guys, just out of curiosity, how often do you guys tend to memorize the squares and cubes? what's the recommended length of your memorization in order to work around such numbers as smoothly as possibe? for example, do you memorize the squares from 1 all the way to 20? 30? 40? plus, i'd also like to get your input with memorizing the 'powers' such as 2^1 all the way to 2^10? or is it more? and what about the 3's or 4's? i'd really like to know what's the recommended level of memorization here.

guys, just out of curiosity, how often do you guys tend to memorize the squares and cubes? what's the recommended length of your memorization in order to work around such numbers as smoothly as possibe? for example, do you memorize the squares from 1 all the way to 20? 30? 40? plus, i'd also like to get your input with memorizing the 'powers' such as 2^1 all the way to 2^10? or is it more? and what about the 3's or 4's? i'd really like to know what's the recommended level of memorization here.

thanks

i memorized all squares to 20 and all cubes till 10. anything else is a burden on my brain and useless info that can be figured out on paper.

also memorized the first 5 overlaps of cubes and squares.

I agree with bmw. Athough to memorize cubes till 10 is a bit too much for me.

I use a trick, if you can call it that way, which I find particularly helpful.

If you want to calculate something like 19^2, you can think as follows:

19*19 = (20-1)*(20-1) = (20-1)^2 = 400-40+1 = 361

Same holds if you want to calculate products like 23*23. To transform in into (20+3)^2 = 400+120+9=529 works in less than 10 secs, especially if you are good in numbers.

Last but not least, there is another trick I use which is extremely helpful.

If you encounter products in the form 999*1001, or 19*21, use (a+b)(a-b)

ok then, well it is an excellent strategy when you're multiplying, but when you have to go backwards, such as finding the square root or cube root, then that's when you will get into the risk of wasting time. I had a gmat teacher from the columbia business school, who suggested memoring the squares all the way to 32 and the cubes all the way to 20. i think that will help us computing our numbers much faster. just thought to share this with you guys.

bmwhype2, what are those rules? lets make this thread full of tricks, memorizing tips, and etc. i'm sure this can be a really interesting one!

something else that i would like to add. also memorize the square roots of 5 to 10.

those can be helpful when dealing with a problem that would make use subtract such numbers from another. i'm assuming that you guys already know your square roots from 1 to 4...heheheh....