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GRE MATH REVIEW
Review of math basics
6
Other
Graduate
04/01/2008

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Term

A negative exponent is expressed as?

 

 

Definition

a fraction, with 1 as the numerator, or top number, and the positive exponent as the denominator, or bottom number.

 

ex.  [image]

[image][image][image]

 

Term
If the exponent is a fraction, such as ½, then the number will be expressed as?
Definition

The square root of that number, or the root determined by the denominator of the fraction.

 

Examples: 

[image]

 

Term

To find the products of exponential numbers, the general rule is as follows:

When multiplying the numbers, you?

 

53 x 52 =

Definition

add the exponents.

 

5(3+2) = 55

Term

To find the products of exponential numbers, the general rule is as follows:

When dividing the numbers, you?

 

53 [image] 52

Definition

subtract the exponents.

 

5(3-2) = 5

Term

any number to the exponent of 1 is?

 

51 =

 

and

 

any number to the exponent of zero is?

 

50 =

Definition
any number to the exponent of 1 is that number. It is also helpful to remember that any number to the exponent of zero is 1.
51 = 5
50 = 1
Term
The mean average is the sum of the observations divided by?
Definition
how many observations you have summed.
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