Cloned from: Math GRE



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Expression to calculate "sum of consecutive integers"
Sum = N(First + Last)/2
Simple Interest
Principal x Rate x Time
Area of a Paralellogram
base x height
Sum of interior angles of a polygon
(n - 2)(180)
Area of Sector
What are multiples? What are the first 10 multiples of 4? What are the first 10 multiples of 6? What are the first 10 multiples of 8?
Integers that a given number can be divided evenly into (has no remainder) 4,8,12,16,20,24,28,32,36,40, 6 12 18 24 30 36 42 48 54 60 8, 16, 24, 32, 40, 48, 56, 64, 72, 80
What are factors? What are the factors of 36?
The positive integers that evenly divide into that number. 1, 2, 3, 4, 6, 9, 12, 18, and 36
What is an integer?
Any number (positive, negative, and zero) that is not a fraction.
What is a prime number?
A prime number is a positive integer greater than 1 that is divisible only by 1 and itself.
What are prime numbers from 0-100?
2    3    5    7 11    13    17    19 23    29    31    37 41    43    47    53 59    61    67    71 73    79    83    89 97
2 is the __________ prime number and the only ______ prime number.
2 is the smallest prime number and the only even prime number
A number is divisible by 2 if…
…its last digit is divisible by 2
A number is divisible by 3 if…
…the sum of its digits is divisible by 3
A number is divisible by 4 if…
…its last two digits are divisible by 4
A number is divisible by 5 if…
…its last digit is 0 or 5
A number is divisible by 6 if…
…its divisible by both 2 and 3
A number is divisible by 9 if…
…the sum of its digits is divisible by 9
a0 =
1
a-b =
1                                      —                                    ab
ab × ac =
ab+c
(ab)c =
ab×c
ab
__
ac
ab-c
Raising a positive fraction less than 1 to a positive integer exponent results in a ________ value?
smaller
The higher the positive exponent is to a positive fraction less than one, the _______ the result?
smaller
When a negative number is raised to an even exponent, the result is: (a) positive or (b) negative?
(a) positive
When a negative number is raised to an odd exponent, the result is: (a) positive or (b) negative?
(b) negative
√ab =
√a × √b
√a+b ≠
√a + √b
√a-b ≠
√a - √b
(√a)2 =
a
√a =
a½
√a/b =
√a
__
√b
1. When multiplying or dividing two numbers with the same sign, the result is always ______

2. When multiplying or dividing two numbers with different signs, the result is always _________
1. positive


2. negative
Subtracting a negative number is the same as…
…adding a positive number
Even × Even =  
Even
Even × Odd =    
Even
Odd × Odd =
Odd
Evenpositive integer =  
Even
Oddpositive integer =    
Odd
Even ± Even =
Even
Odd ± Odd =  
Even
Odd ± Even =
Odd
With “which of the following” problem solving questions, the answers are disproportionately weighted toward answer choices ____ and ____
(D) and (E)
The most efficient way to backsolve in problem solving questions is to plug in either answer choice ____ or ____ first.
(B) or (D)
When columns in Quant Comp questions look similar, suspect that (C) is: (a)   the correct answer (b)   not the correct answer
(b) not the correct answer
When the base number ≠ 0, even numbered exponents always yield a _____ ; odd-numbered exponents always do what?
Positive number

Keep the sign of the base number
x of y cards