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08 Jan 2013, 03:30
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i have noticed that some of the gmat math seem duanting and tedious..i need some tips on how i can solve problems based on operations of multiplications,divisions,subractions and additions in an easier way whilst managing the time, for instance;multiplying 7931 by 1993 would cause some problems and most definitely waste more of my time during an exam..i need help on techiniques that can break tough and time wasting calculations in a simple and a less tiresome way..dividing numbers that are in decimals but have many digits or even multiplying them is my day to day problem..i humbly appreciate anyone who can spare his/her time just to help me with the tips or even additional information that is clear in understanding..i will need those useful tips and techiniques during my sitting of my gmat math exam to save more time..THANKS
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jumsumtak
Joined: 23 Mar 2011
Last visit: 14 Jun 2023
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Concentration: Healthcare, Strategy
Schools: Duke '16 (M)
08 Jan 2013, 06:44
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chiccufrazer1
Don' t over-think/overdo stuff.
I've taken GMAT twice and have solved a lot of quant problems. It would be safe to say that I haven't solved anything close to 7931 x 1993 for GMAT quant. The GMAT is designed not to test your mental math/quick calculations, but your understanding of concepts.
a couple of points:
1.) You are better of learning quant basics (and advanced quant subsequently) and solving questions rather than focusing on how to nail the calculation part in less than 5 sec. In fact, in my opinion you should slow down on the calculations, because that is where most of the errors happen.
2.) Even if you learn the 'tricks' to do these calculations quickly, I don't think you would be 'confident' enough to use them on the test. At least, I would double check with the traditional way. That will only result in losing more time.
Still if you would like to improve your calculations, go through some vedic mathematics material.
P.S: if I saw 7931 x 1993 on the test, I would have rounded off (to 2000) and moved on. Or if I had still more time I would have done this 7931 x 2000 - 7931 x 7.
08 Jan 2013, 07:30
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I am definitely not an expert but I just thought of something - check out the awesome GMAT club math book, it has a lot of shortcuts/formulas that will be of help in cutting down your time & in thinking of things the right way.
