# Study sets matching "gre math"

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Time per question: Sentence Equivalence

How to find a common remainder of a lis…

If we know the lengths of two sides of…

Time per question: Text Completion

45 seconds

Find the LCM, List multiples of LCM.... Add the value of the desi…

Difference of other two sides < third side < Sum of other two…

30-90 seconds, depending on the number of blanks

Time per question: Sentence Equivalence

45 seconds

How to find a common remainder of a lis…

Find the LCM, List multiples of LCM.... Add the value of the desi…

Time per question: Sentence Equivalence

Time per question: Text Completion

Time per question: Reading Comprehension

Time per question: Quantitative Compari…

45 seconds

30-90 seconds, depending on the number of blanks

1 min 30 seconds; plan to complete a short passage (2 question…

1 min 15 seconds

Time per question: Sentence Equivalence

45 seconds

Time per question: Text Completion

30-90 seconds, depending on the number of blanks

Perfect Squares 1-15

How to recognize if a # is a multiple o…

Area of a rectangle

How to recognize a # as a multiple of 9

1, 4, 9, 16, 25, 36, 49, 64, 81, 100, 121, 144, 169, 196, 225

The sum of the digits it a multiple of 3 and the last two digi…

A = length x width

The sum of the digits is a multiple of 9.

Perfect Squares 1-15

1, 4, 9, 16, 25, 36, 49, 64, 81, 100, 121, 144, 169, 196, 225

How to recognize if a # is a multiple o…

The sum of the digits it a multiple of 3 and the last two digi…

Factors

Divisors

How many factors does 120 have?

Greatest common factor (or divisor)

Factors are numbers that produce a product when multiplied tog…

Divisor is the number that divides into an integer. (Ex. 12 ÷…

1 x 120, 2 x 60, 3 x 40, 4 x 30, 5 x 24, 6 x 20, 8 x 15, 10 x…

the GCF of two numbers if the biggest factor shared by two num…

Factors

Factors are numbers that produce a product when multiplied tog…

Divisors

Divisor is the number that divides into an integer. (Ex. 12 ÷…

Integers

Zero

Even or Odd

Factor

-NUMBERS THAT HAVE NO FRACTIONAL OR DECIMAL PARTS

1) Neither positive or negative... 2) 0 is even ... 3) You can not d…

1) Only integers possess the property of being even or odd... 2)…

-number that will divide evenly into the integer in question

Integers

-NUMBERS THAT HAVE NO FRACTIONAL OR DECIMAL PARTS

Zero

1) Neither positive or negative... 2) 0 is even ... 3) You can not d…

Perfect Squares 1-15

How to recognize if a # is a multiple o…

Area of a rectangle

How to recognize a # as a multiple of 9

1, 4, 9, 16, 25, 36, 49, 64, 81, 100, 121, 144, 169, 196, 225

The sum of the digits it a multiple of 3 and the last two digi…

A = length x width

The sum of the digits is a multiple of 9.

Perfect Squares 1-15

1, 4, 9, 16, 25, 36, 49, 64, 81, 100, 121, 144, 169, 196, 225

How to recognize if a # is a multiple o…

The sum of the digits it a multiple of 3 and the last two digi…

Perfect Squares 1-15

How to recognize if a # is a multiple o…

Area of a rectangle

How to recognize a # as a multiple of 9

1, 4, 9, 16, 25, 36, 49, 64, 81, 100, 121, 144, 169, 196, 225

The sum of the digits it a multiple of 3 and the last two digi…

A = length x width

The sum of the digits is a multiple of 9.

Perfect Squares 1-15

1, 4, 9, 16, 25, 36, 49, 64, 81, 100, 121, 144, 169, 196, 225

How to recognize if a # is a multiple o…

The sum of the digits it a multiple of 3 and the last two digi…

percent formula

percent increase

percent decrease

multiples of 2

percent x whole = part

Amount increase/original whole x 100 = percent increase

amount decrease/original whole x 100 = percent decrease

if last digit is even

percent formula

percent x whole = part

percent increase

Amount increase/original whole x 100 = percent increase

Volume of a sphere with radius r = ?

If events A and B are

**not**independent…If events A and B are independent, what…

If events A and B are independent, what…

(4/3) πr^3

P(A and B) = P(B) x P(A|B)... P(A and B) = P(A) x P(B|A)

P(A or B) = P(A) + P(B) - P(A) x P(B)

P(A and B) = P(A) x P(B)

Volume of a sphere with radius r = ?

(4/3) πr^3

If events A and B are

**not**independent…P(A and B) = P(B) x P(A|B)... P(A and B) = P(A) x P(B|A)

Perfect Squares 1-15

How to recognize if a # is a multiple o…

Area of a rectangle

How to recognize a # as a multiple of 9

1, 4, 9, 16, 25, 36, 49, 64, 81, 100, 121, 144, 169, 196, 225

The sum of the digits it a multiple of 3 and the last two digi…

A = length x width

The sum of the digits is a multiple of 9.

Perfect Squares 1-15

1, 4, 9, 16, 25, 36, 49, 64, 81, 100, 121, 144, 169, 196, 225

How to recognize if a # is a multiple o…

The sum of the digits it a multiple of 3 and the last two digi…

A number is divisible by 3 if ______.

A number is divisible by 4 if ____.

A number is divisible by 6 if ___.

A number is divisible by 8 if ___.

the sum of the digits is a multiple of 3

the two digits at the end form a number that is divisible by 4.

the number is divisible by both 2 and 3.

the three digits at the end form a number that is divisible by…

A number is divisible by 3 if ______.

the sum of the digits is a multiple of 3

A number is divisible by 4 if ____.

the two digits at the end form a number that is divisible by 4.

Angles

Polygons

Polygons: Total degrees

Polygons: Average degrees per side or d…

A right angle is 90 degrees... A straight line is 180 degrees... If…

Any figure with three or more sides

180(n-2)... Where n is the number of sides

= 180((n-2)/n)... Where n is the number of sides

Angles

A right angle is 90 degrees... A straight line is 180 degrees... If…

Polygons

Any figure with three or more sides

Always reduce big fractions before doin…

To add or subtract fractions, you must…

To add or subtract fractions, you can a…

To multiply fractions, you just ______…

common denominator

Bowtie method

multiply straight across

Always reduce big fractions before doin…

To add or subtract fractions, you must…

common denominator

Formula for finding the number of degre…

Special Right Triangles (45-45-90)

Special Right Triangle (30-60-90)

Area of:... Triangle... Quadrilateral... Circle

(n-2)*180... n= Number of Sides or Angles

1/2 bh... l*w... π r^2

Formula for finding the number of degre…

(n-2)*180... n= Number of Sides or Angles

Special Right Triangles (45-45-90)

Divisibility Rule: 9

Divisibility Rule: 6

Divisibility Rule: 4

Combinations

-if sum of the number is divisible by 9, then the entire # is…

-if number is divisible by 2 and 3, than it is also divisible…

-if the last two digits are divisible by 4, than entire # is a…

nCr = ... n!... ------------------... (r!)[(n-r)!]... **each answer ap…

Divisibility Rule: 9

-if sum of the number is divisible by 9, then the entire # is…

Divisibility Rule: 6

-if number is divisible by 2 and 3, than it is also divisible…

Counting factors of large numbers

Find factors of odd numbers

Find even factors

list of Squares of integers (perfect sq…

Steps:... 1) prime factorization of number ... 2) create list of exp…

1) same method ... 2) ignore exponent factors of 2!... Done!

1) same method as counting large factors ... 2) find odd factors…

1x1=1... 2x2=4... 3x3=9... 4x4=16... 5x5=25... 6x6=36... 7x7=49... 8x8=64... 9x9=81... 10…

Counting factors of large numbers

Steps:... 1) prime factorization of number ... 2) create list of exp…

Find factors of odd numbers

1) same method ... 2) ignore exponent factors of 2!... Done!

P|E|MD|AS

Associative laws

Distributive

Exponents

"Please excuse my dear aunt sally" for order of operations--pa…

When you're adding or multiplying series of numbers, you can r…

a(b+c)=ab+ac... a(b-c)=ab-ac

P|E|MD|AS

"Please excuse my dear aunt sally" for order of operations--pa…

Associative laws

When you're adding or multiplying series of numbers, you can r…

DATA ANALYSIS

Dividing Data into Quartiles

Box and Whisker Plot

Interquartile Range

...

1. find the median of the data set (quartile 2)... 2. find the me…

marks the:... -lowest number... -quartile 1 ... -quartile 2 ... -quartile…

-difference between the third quartile and first quartile, not…

DATA ANALYSIS

...

Dividing Data into Quartiles

1. find the median of the data set (quartile 2)... 2. find the me…

Perfect Squares 1-15

How to recognize if a # is a multiple o…

Area of a rectangle

How to recognize a # as a multiple of 9

1, 4, 9, 16, 25, 36, 49, 64, 81, 100, 121, 144, 169, 196, 225

The sum of the digits it a multiple of 3 and the last two digi…

A = length x width

The sum of the digits is a multiple of 9.

Perfect Squares 1-15

1, 4, 9, 16, 25, 36, 49, 64, 81, 100, 121, 144, 169, 196, 225

How to recognize if a # is a multiple o…

The sum of the digits it a multiple of 3 and the last two digi…