#### Study sets matching "gre math"

#### Study sets matching "gre math"

30°-60°-90° right triangle

45°-45°-90° right triangle

The sum of any two sides of a triangle…

If we know the lengths of two sides of…

1-2-√3

1-1-√2

GREATER than the third side

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

30°-60°-90° right triangle

1-2-√3

45°-45°-90° right triangle

1-1-√2

Intergers

Real Number

PEMDAS

Commutative Property

Any counting number including negative numbers

Numbers that appear on the number line including pi, the squa…

1. Parentheses... 2. Exponents... 3. Multiplication/Division... 4. Add…

a + b = b + a... A x B = B x A

Intergers

Any counting number including negative numbers

Real Number

Numbers that appear on the number line including pi, the squa…

Perfect Squares 1-15

How to recognize if a # is a multiple…

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 dig…

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…

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

Perfect Squares 1-15

How to recognize if a # is a multiple…

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 dig…

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…

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

the angles of a triangle add to

percent formula

percent increase or decrease formula

least common multiple

180

part equals percent times whole

percent increase equals amount of increase divided by origina…

break each number down into factors and multiply each number…

the angles of a triangle add to

180

percent formula

part equals percent times whole

Counting factors of large numbers

Find factors of odd numbers

Find even factors

list of Squares of integers (perfect s…

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

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... 1…

Counting factors of large numbers

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

Find factors of odd numbers

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

Perfect Squares 1-15

How to recognize if a # is a multiple…

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 dig…

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…

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

Perfect Squares 1-15

How to recognize if a # is a multiple…

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 dig…

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…

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

Isosceles triangle

3-4-5 Isosceles triangle

5-12-13 Isosceles triangle

30-60-90 right triangle

2 sides and their angles are the same length

Ratio: Legs = 3,4, hypotenuse = 5

Ratio: Legs = 5,12, hypotenuse = 13

Ratio: Legs = 1,√3, hypotenuse = 2... *equilateral triangle divi…

Isosceles triangle

2 sides and their angles are the same length

3-4-5 Isosceles triangle

Ratio: Legs = 3,4, hypotenuse = 5

integers

real numbers

factor

non real number

any whole number, positive or negative... -0 is an integer

-any number on number line... -can be negative and positive... -fra…

-any integer you get from dividing an integer by another inte…

-not on number line... -negative square root... -any number divided…

integers

any whole number, positive or negative... -0 is an integer

real numbers

-any number on number line... -can be negative and positive... -fra…

Divisible by 3

Divisible by 4

Divisible by 6

Divisible by 9

Sum of digits is multiple of 3

Last 2 digits are multiple of 4

Sum of digits is multiple of 3... Last digit is even

Sum of digits is multiple of 9

Divisible by 3

Sum of digits is multiple of 3

Divisible by 4

Last 2 digits are multiple of 4

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)

"If a and b are consecutive numbers..."

For all the hypothetical x, y problems…

% less than/% greater than

Factor: (3x-12y)/9

Could be a then b OR could be b then a

Be sure to try enough possibilities to be sure

change/older amount or the one by "of"

3(x-4y)/3*3 = (x-4y)/3

"If a and b are consecutive numbers..."

Could be a then b OR could be b then a

For all the hypothetical x, y problems…

Be sure to try enough possibilities to be sure

When should you estimate?

fast way to divide by 5

How can you use the doubling and halvi…

How do you square by 2 on a multiple o…

when the answers are far apart

double the number and divide by 10

1. find half of a factor 2. double the other

square the non 0 -- add 2 zeros to the answer

When should you estimate?

when the answers are far apart

fast way to divide by 5

double the number and divide by 10

1 Yard = ? inches?

Prime number

π= (fraction)

One side of a triangle has length 8 an…

1 Yard = 36 inches

A prime number (or a prime) is a natural number greater than…

22/7

The maximum area of the triangle will come when the given sid…

1 Yard = ? inches?

1 Yard = 36 inches

Prime number

A prime number (or a prime) is a natural number greater than…