Save
Busy. Please wait.
Log in with Clever
or

show password
Forgot Password?

Don't have an account?  Sign up 
Sign up using Clever
or

Username is available taken
show password


Make sure to remember your password. If you forget it there is no way for StudyStack to send you a reset link. You would need to create a new account.
Your email address is only used to allow you to reset your password. See our Privacy Policy and Terms of Service.


Already a StudyStack user? Log In

Reset Password
Enter the associated with your account, and we'll email you a link to reset your password.
focusNode
Didn't know it?
click below
 
Knew it?
click below
Don't know
Remaining cards (0)
Know
0:00
share
Embed Code - If you would like this activity on your web page, copy the script below and paste it into your web page.

  Normal Size     Small Size show me how

GRE Math Review

Basic Concepts Fractions,Decimals, & Exponents

QuestionAnswer
product of even # of negative #'s is always... (positive or negative) positive
the product of odd # of negative #'s is always.... (positive or negative) negative
to divide fraction (3/4) / (1/2).... invert divisor and multiply 3/4 x 2/1
to multiply decimals... 1) Count # of spaces to the right of decimal 2) multiply w/o decimal. 3) place decimal in the same space when done.
to divide decimals...(process) 1) convert divisor to whole # 2)move decimal point in Dividend to the right the same # of places 3) Divide. proportion of modified dec. = proportion of origional
what is a way to estimate a reference point when asked to find x% of a # ?... find 10% of the #
how do we compare ratios? ratios are the same as fractions, thus convert to common denominator to compare.
What is the Median of a set of #'s? the one in the middle, in a set of #'s
What is the Mode in a set of #'s? the most frequently occurring # of a set
When multiplying #'s with exponents, (name process) to multiply #'s w/ exponents... > add the exponents
When dividing #'s w/exponents...(name process) (2^4)/(2^2) = to divide #'s w/ exponents... > subtract the exponents (2^4)/2^2)= 2^(4-2)=2^2= 4
to raise a # w/ exponent to another power...(name process) to raise a # w/ exponent to another power... >multiply exponents
what is the relation of a negative power to a positive power? (10^-5)+(10^X)? Negative power is reciprocal of positive power. (10^-5)=(10^1/5)
Raising a fraction between 0-1 to a power greater than 1: results in.... Raising a fraction between 0-1 to a power greater than 1: >results in a # smaller than the original. (2/3)^3= (2/3)x(2/3)x(2/3)=8/27
Negative # raised to an even power results in.... (-X^2)= Negative # raised to an even power results in.... > a positive #: (-X^2)= +(X) x (X) (same as the product of two negative #'s)
#^0 = ?... #^0 = 1
Scientific Notation means.... of (300,000) would be?.... Scientific Notation means displaying large #'s as small numbers multiplied by power of 10. of (300,000)=(3 x 10^5)
the square root of a positive fraction w/ value of less than 1.. is...? the square root of a positive fraction w/ value of less than 1... > is larger than the original fraction
Exponents of 10 will always yield how many additional zeros? 10^x = 10 +(x-1) zeros 10^2=100...10^5=100,000 10^3=1000 10^4=
10^2....10^7= 10^2= 100 10^3=1000 10^4=10,000 10^5=100,000 10^6= 10,00,000 10^7=10,000,000....
Popular GRE sets

 

 



Voices

Use these flashcards to help memorize information. Look at the large card and try to recall what is on the other side. Then click the card to flip it. If you knew the answer, click the green Know box. Otherwise, click the red Don't know box.

When you've placed seven or more cards in the Don't know box, click "retry" to try those cards again.

If you've accidentally put the card in the wrong box, just click on the card to take it out of the box.

You can also use your keyboard to move the cards as follows:

If you are logged in to your account, this website will remember which cards you know and don't know so that they are in the same box the next time you log in.

When you need a break, try one of the other activities listed below the flashcards like Matching, Snowman, or Hungry Bug. Although it may feel like you're playing a game, your brain is still making more connections with the information to help you out.

To see how well you know the information, try the Quiz or Test activity.

Pass complete!
"Know" box contains:
Time elapsed:
Retries:
restart all cards