#### Study sets matching "gmat math review"

#### Study sets matching "gmat math review"

for any 2 sets A and B, the UNION of A…

the intersection of A and B is.

the union is denoted by

the intersection is denoted by

the set of all elements that are in A or in B or in both

the set of all elements that are in both A and B

A U B

A (upside down U) B

for any 2 sets A and B, the UNION of A…

the set of all elements that are in A or in B or in both

the intersection of A and B is.

the set of all elements that are in both A and B

Adding & Subtracting fractions

Multiplying fractions

Dividing fractions

Exponent properties positive

Must have a common denominator

a/b x c/d = ac/bd

(a/b)/(c/d)=a/b x d/c = ad/bc

Raising a positive fraction less than 1 to a positive exponen…

Adding & Subtracting fractions

Must have a common denominator

Multiplying fractions

a/b x c/d = ac/bd

How do you find the surface area of a…

How do you find the volume of a rectan…

Surface Area Example: (draw it out and…

Volume Example:... Find the Volume of a R…

Calculate the areas of each side and add them up.

Volume = length · width · height... or... Volume = (area of base) ·…

Answer: ... SA = 2(3·4) + 2(3·8) + 2(4·8) = 136... multiply each ar…

Answer:... V = 3 · 4 · 8 = 96

How do you find the surface area of a…

Calculate the areas of each side and add them up.

How do you find the volume of a rectan…

Volume = length · width · height... or... Volume = (area of base) ·…

P.E.M.D.A.S.

Numerator

Denominator

Mixed Number

Rule for Order of Operations.... Order = P > E > M & D (L to R)…

Top # of a fraction = "part".

Bottom # of a fraction = "whole".

Number made up of both an integer and a fraction.

P.E.M.D.A.S.

Rule for Order of Operations.... Order = P > E > M & D (L to R)…

Numerator

Top # of a fraction = "part".

0!

P(E)

P(E) = # of outcomes/ total # of possi…

Rules of Exponents

1! = 1

the probability that an event occurs, a number between 0 and…

P({1,3,5}) = |{1,3,5}|/6 = 3/6 = 2

Where "x" and "y" are any positive number, and "r" and "s" ar…

0!

1! = 1

P(E)

the probability that an event occurs, a number between 0 and…

standard deviation

formula for solving: S = {A, B, C, D,…

exponent rules: (x^r)(x^s) =

exponent rules: (x^r)/(x^s) =

1) calculate the mean... 2) find the difference between the mean…

n! / (k!(n-k)!)... =5! / (2!*3!)... =120 / 12... =10

x^(r+s)

x^(r-s)

standard deviation

1) calculate the mean... 2) find the difference between the mean…

formula for solving: S = {A, B, C, D,…

n! / (k!(n-k)!)... =5! / (2!*3!)... =120 / 12... =10

Integer

Prime number

Factor/Divisor

Quotient

Whole number (not fraction)

Positive number can only be divided by self and 1

Number that can be divided into another number

How many timex a number can be divided into another

Integer

Whole number (not fraction)

Prime number

Positive number can only be divided by self and 1

If x and y are integers and x /= 0, th…

If x and y are integers and x /= 0, th…

different way to find remainders of x…

what is the remainder of 28/8?

xn... (some integer n)

divisor

y = xq + r

28 = (8*3) + 4... remainder = 4

If x and y are integers and x /= 0, th…

xn... (some integer n)

If x and y are integers and x /= 0, th…

divisor

Compound Interest

Area of a Triangle

Area of a circle

Find the original price if given the t…

Compound interest is interest calculated on the initial princ…

The area of a triangle is 1/2bh

The area of a circle is pi x radius squared

X= Original Price = 100%... New Price/X+Percentage= X... Example:…

Compound Interest

Compound interest is interest calculated on the initial princ…

Area of a Triangle

The area of a triangle is 1/2bh

Dividing by 5

double and halving

squaring shortcuts

doubling an area of a square and how t…

1. if a number is divisible by 5 you can always multiply it b…

1. if you have 2 numbers that need to be multiplied and one i…

1. multiples of ten are easy. you just multiply the base unit…

Mupltiply the origional sum by 8 which is 2^3

Dividing by 5

1. if a number is divisible by 5 you can always multiply it b…

double and halving

1. if you have 2 numbers that need to be multiplied and one i…

Integer... Positive Integer / Negative In…

Sum of the angles of a triangle is?

a - b = - (b - a)

Multiples

is a number that can be written without a fractional componen…

180

...

Multiple of 3 are 3 (=3

**1), 6 (=3**2), 9(=3**3), 12(=3**4),…Integer... Positive Integer / Negative In…

is a number that can be written without a fractional componen…

Sum of the angles of a triangle is?

180

Absolute Value

General rule about variables

0^x

1^x

-Generally have two solutions... -+/-... -isolate expression in bra…

if you need to solve for n variables you need n equations

0

1

Absolute Value

-Generally have two solutions... -+/-... -isolate expression in bra…

General rule about variables

if you need to solve for n variables you need n equations

An integer whose only factors are 1 an…

What is the smallest and only even pri…

T/F: Every positive number can be fact…

What is the smallest member of the com…

prime number

2

True

Least common multiple

An integer whose only factors are 1 an…

prime number

What is the smallest and only even pri…

2