#### Study sets matching "gre math"

#### Study sets matching "gre math"

Arithmetic Mean

Average

Chord

Composite Number

Using arithmetic to figure out the average of data = add all…

AKA Medium or Typical = Central Tendency

a line connecting two points along the circumference of a cir…

Natural number that has more than two factors. Example: 6, 1•…

Arithmetic Mean

Using arithmetic to figure out the average of data = add all…

Average

AKA Medium or Typical = Central Tendency

Factors

Divisors

How many factors does 120 have?

Greatest common factor (or divisor)

Factors are numbers that produce a product when multiplied to…

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 nu…

Factors

Factors are numbers that produce a product when multiplied to…

Divisors

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

Primes

Pythagorean triples

Greatest Common Factor/divisor

Area of a parallelogram

2 3 5 7 11 13 17 19 23 29 31 37 41 43 47 53 59

(3, 4, 5)... (5, 12, 13)... (8, 15, 17)... (7, 24, 25)

biggest factor shared by 2 numbers -- easiest way to find is…

A=bh

Primes

2 3 5 7 11 13 17 19 23 29 31 37 41 43 47 53 59

Pythagorean triples

(3, 4, 5)... (5, 12, 13)... (8, 15, 17)... (7, 24, 25)

Perfect Squares 1-15

Number is multiple of 12

Number is a multiple of 9

Slope given 2 points

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

The sum of the digits is a multiple of 3; the last two digits…

sum of the digits is a multiple of 9.

m= (Y2-Y1)/(X2-X1)... ex: (1,3); (5,6)... m = (6-3) / 5-1) = 3/4

Perfect Squares 1-15

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

Number is multiple of 12

The sum of the digits is a multiple of 3; the last two digits…

Digit

10897... 7 is in the ___ place

10897... 9 is in the ___ place

10897... 8 is in the ___ place

Numbers that make up other numbers.... There are ten: 0, 1, 2,…

ones

tens

hundreds

Digit

Numbers that make up other numbers.... There are ten: 0, 1, 2,…

10897... 7 is in the ___ place

ones

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…

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…

Time per question: Sentence Equivalence

Time per question: Text Completion

Time per question: Reading Comprehension

Time per question: Quantitative Compar…

45 seconds

30-90 seconds, depending on the number of blanks

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

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

Either/Or Set

Both/Neither Set

Combination

Permutation with replacement

Make table of options/total vs options/total

Group 1 + Group 2 + Neither - Both = Total

n!/(k!(n-k)!) Order does not matter, no replacement

n^k

Either/Or Set

Make table of options/total vs options/total

Both/Neither Set

Group 1 + Group 2 + Neither - Both = Total

Average

Median

Mode

Range

Sum of Terms, over, the Number of Terms

The middle term of a set in sequential order

The term that occurs most frequently

The difference between the greatest term and the least term

Average

Sum of Terms, over, the Number of Terms

Median

The middle term of a set in sequential order

Primes

Pythagorean triples

Greatest Common Factor/divisor

Area of a parallelogram

2 3 5 7 11 13 17 19 23 29 31 37 41 43 47 53 59

(3, 4, 5)... (5, 12, 13)... (8, 15, 17)... (7, 24, 25)

biggest factor shared by 2 numbers -- easiest way to find is…

A=bh

Primes

2 3 5 7 11 13 17 19 23 29 31 37 41 43 47 53 59

Pythagorean triples

(3, 4, 5)... (5, 12, 13)... (8, 15, 17)... (7, 24, 25)

a number is divisible by 3 if

a number is divisible by 9 if

a number is divisible by 4 if

a number is divisibly by 6

the sum of the digits is divisible by 3

the sum of the digits is divisible by 9

the last two digits make a number that is divisible by 4

if the number is divisible by BOTH 2 and 3

a number is divisible by 3 if

the sum of the digits is divisible by 3

a number is divisible by 9 if

the sum of the digits is divisible by 9

PEMDAS

Percent Formula

Percent increase

Percent decrease

Parentheses... Exponents... Multiplication & Division (left to righ…

Part = Percent x Whole

(Amount of increase/Original Whole) x 100%

(Amount of decrease/Original Whole) x 100%

PEMDAS

Parentheses... Exponents... Multiplication & Division (left to righ…

Percent Formula

Part = Percent x Whole

How to use the PERCENT FORMULA... Exampl…

How to use the PERCENT INCREASE/ DECRE…

How to add, subtract, multiply, and di…

How to predict whether a sum, differen…

Part = Percent X Whole... Example 1: What is 12% of 25?... Part =…

Percent Increase = Amount of Increase/Original Whole X 100%…

Find the common denominator before adding or subtracting frac…

Tale simple numbers like 2 for even and 3 for odd and see wha…

How to use the PERCENT FORMULA... Exampl…

Part = Percent X Whole... Example 1: What is 12% of 25?... Part =…

How to use the PERCENT INCREASE/ DECRE…

Percent Increase = Amount of Increase/Original Whole X 100%…

Area of a Triangle

Range of Third Side of a Triangle

Pythagorean Theroem

45-45-90 Triangle Side Ratios

A = 1/2 bh

Less than the sum of the two given sides, but greater than th…

a^2 + b^2 = c^2

x-x-xroot2

Area of a Triangle

A = 1/2 bh

Range of Third Side of a Triangle

Less than the sum of the two given sides, but greater than th…

number

interger

what is the only even prime #?

List the prime numbers between 1-20

real number= all the #'s on the # line. Including fractions &…

positive & negative WHOLE numbers

2

2, 3, 5, 7, 11, 13, 17, 19

number

real number= all the #'s on the # line. Including fractions &…

interger

positive & negative WHOLE numbers

Digits

Numbers

Integers

Even or Odd

Refers to numbers that make up other numbers; there are 10 di…

Made up of either a digit or a collection of digits ... -Includ…

The numbers that have no fractional or decimal part ... Ex. -6,…

Only integers posses the property of being even or odd... - fra…

Digits

Refers to numbers that make up other numbers; there are 10 di…

Numbers

Made up of either a digit or a collection of digits ... -Includ…

Simplifying Square Roots

Median, good way to think about it is ..

Prime Numbers

When subtracting or adding exponents i…

√28 = √4×7 which equals 2√7 and √175 = √25*7 which equals 5√7…

it's the 50th percentile or the middle of a list.

Only two whole number factors are 1 and itself. ie 1, 2, 3, 5…

You have to factor when possible. For example= 4⁶-4⁵ can be f…

Simplifying Square Roots

√28 = √4×7 which equals 2√7 and √175 = √25*7 which equals 5√7…

Median, good way to think about it is ..

it's the 50th percentile or the middle of a list.

divisible by 3

divisible by 4

divisible by 8

divisible by 9

sum of its digits is divisible 3

if its last two digits form a number that's divisible by 4

last three digits form a number that is divisible by 8

sum of its digits is divisible by 9

divisible by 3

sum of its digits is divisible 3

divisible by 4

if its last two digits form a number that's divisible by 4

how many 3 digit numbers can be formed…

solving inequalities

open circle on number line

vertical lines are equal

3x2x1 (the hundreds has 3 possible digits, the tens has two,…

flip the sign if you multiply or divide by a negative number

< or >

they add up to 180

how many 3 digit numbers can be formed…

3x2x1 (the hundreds has 3 possible digits, the tens has two,…

solving inequalities

flip the sign if you multiply or divide by a negative number

Digit

Number

Integer

Absolute Value

The numbers that make up other numbers 0,1,2,3,4,5,6,7,8,9

A digit or a collection of digits including 0, negative numbe…

Counting numbers such as -2, -1, 0, 1, 2; Fractions are NOT i…

A number equal to its distance away from 0 on the number line…

Digit

The numbers that make up other numbers 0,1,2,3,4,5,6,7,8,9

Number

A digit or a collection of digits including 0, negative numbe…

Simple interest formula

Compound interest formula

Combined work rates

Distance, rate, time formula

(amount borrowed or deposited) + (rate) + (time)

A= P(1+r/n)^(n)(t)

(1/time taken by a) + (1/time taken by b) = (1/time taken by…

Distance = (rate) (time)

Simple interest formula

(amount borrowed or deposited) + (rate) + (time)

Compound interest formula

A= P(1+r/n)^(n)(t)

Consecutive

Decimals

Difference

Distinct

integers listed in order of increasing value without any in b…

rules - line up decimals to add or subtract. when multiplying…

the result of subtraction

ex. the number 123 has 3 distinct digit while 122 has 2 disti…

Consecutive

integers listed in order of increasing value without any in b…

Decimals

rules - line up decimals to add or subtract. when multiplying…

Angles of Regular Polygons

Common Pythagorean Triples

Sum of numbers inclusive (1+ 2+ 3+...+…

Permutations... (i.e. number of ways to o…

Triangle - 60˚... Quadrilateral - 90˚... Pentagon - 108˚ ... Hexagon -…

3, 4, 5... 5, 12, 13... 6, 8, 10... 8, 15, 17... 7, 24, 25... 9, 40, 41

Formula:... n(n+1) / 2

n! = n(n-1)(n-2)(n-3) ... (3)(2)(1)

Angles of Regular Polygons

Triangle - 60˚... Quadrilateral - 90˚... Pentagon - 108˚ ... Hexagon -…

Common Pythagorean Triples

3, 4, 5... 5, 12, 13... 6, 8, 10... 8, 15, 17... 7, 24, 25... 9, 40, 41

how do you find the third angle of a t…

what is the percent formula?

percent increase formula

percent decrease formula

all three angles added together = 180

part= percent x whole

amount of increase/original whole x 100%

amount of decrease/orginial whole x 100%

how do you find the third angle of a t…

all three angles added together = 180

what is the percent formula?

part= percent x whole

How to find standard deviation

AUB

A intersection B

n!

1. Find the mean... 2. Find the differences between the mean and…

A union B; The set of all elements that are in A or in B or i…

A (upside down u) B; The set of all elements that are in both…

Factorial

How to find standard deviation

1. Find the mean... 2. Find the differences between the mean and…

AUB

A union B; The set of all elements that are in A or in B or i…

multiples of 3

multiples of 4

multiples of 6

multiples of 9

sum of digits is a multiple of 3

last two digits are a multiple of 4

even number, sum of digits is a multiple of 3

sum of digits is a multiple of 9

multiples of 3

sum of digits is a multiple of 3

multiples of 4

last two digits are a multiple of 4

Real numbers

Counting numbers

Whole numbers

Integers

any number that can be the coordinates of a point on a number…

Set of numbers that are evenly spaced on the number line... (1,…

Counting numbers plus zero... (0, 1, 2, 5)

Whole numbers, plus negatives of the counting numbers... (-4, -3…

Real numbers

any number that can be the coordinates of a point on a number…

Counting numbers

Set of numbers that are evenly spaced on the number line... (1,…

percent formula

percent increase formula

percent decrease formula

average/mean

part = percent x whole

percent increase = (amount increase/original whole) x 100%

percent decrease = (amount of decrease/original whole) x 100%

average = sum of terms/number of terms

percent formula

part = percent x whole

percent increase formula

percent increase = (amount increase/original whole) x 100%

Angle/Side relationship

Right Isosceles Triangle

30:60:90 Triangle

Prime numbers under 50

Longest(shortest) side is opposite the largest(smallest) angl…

45,45,90 Hypotenuse is x√2

x,x√3,2x. (if its equilateral split it down the middle)

2,3,5,7,11,13,17,23,29,31,37,41,43,47 (24 total under 100)

Angle/Side relationship

Longest(shortest) side is opposite the largest(smallest) angl…

Right Isosceles Triangle

45,45,90 Hypotenuse is x√2

Perfect Squares 1-15

How to recognize if a # is a multiple…

How to recognize a # as a multiple of 9

Slope given 2 points

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 dig…

The sum of the digits is a multiple of 9.

m= (Y1-Y2)/(X1-X2)

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…

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