What to Memorize in GMAT Quant for the GMAT
There are a few things you can memorize for GMAT Quant that will help you answer questions faster, minimize mistakes, and fill in any gaps and holes.
This post collects the best tips from GMAT Club with special credit going to einstein10.
Attachment:
Arithmetic Fractions and Percentages.doc
Attachment:
what_to_remember_gmat_Q.pdf
Also some fun rules for not memorizing:
Multiples of 11
If you need to multiply any two-digits number by 11, just sum those digits and put the result in between. For example,
13x11 -> 1+3=4 -> 143 is the result.
Or, 36x11 -> 3+6=9 -> the result is 36x11=396.
For 3 digits
133x11 --> 1 1+3 3+3 3=1463
And for 4 digits
1243x11 --> 1 1+2 2+4 4+3 3=13673
And for 5 digits
15453x11 --> 1 1+5 5+4 4+5 5+3 3=169983
For Multiples of 25
Multiplying For example: 65*65
1) Always write down 25 as this is always the last two digits of the result:
...25
2) Multiply (non-units digits) times (non-units digits + 1)
6 * (6+1) = 42
3) Combine:
4225
Have your own? Share them here!