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51 Cards in this Set
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Factor or Divisor =

Any integer that leaves no remainder (i.e a reaminder of 0) when it is dvided into another integer:1, 2, 5, 10 are the factors (or divisors) of 10


Prime Number

A positive integer that has exactly two divisors. The first few primes are 2, 3, 5, 7, 11, 13, 17 (not 1)


bm bn
b raise to m, b raise to n = 
bm
 = (m n) bn b 

m n
(b ) = 
mn
b 

2
(squ a) = 
sq a * sq a


To compare two fractions

convert them to decimals by dividing the numerator by the denominator


To multiply two fractions,

Multiply their numberator and multiply their denominators
3/5 * 4/7 = 3*4/5*7 = 12/35 

To divide any number by a fraction

Multiply that number by the reciprocal of the fraction
3/5 divided by 2/3 = 3/5* 3/2 = 9/10 

To add or subtract fraction with different denominators, f

first rewrite the fraction as equivalent fractions with the same denominator:
1/6+3/4 = 2/12 + 9/12 = 11/12 

Percent increase of qty =

Actual increase
 * 100% Original amount 

Percent decrease of qty =

Atcual decrease
 * 100% Original amount 

Ratio of 2 to 3 =

2/3 or 2:3


Average of set of n numbers
= 
Sum of the numbers
 n 

Probability =

Favorable Outcomes
 Total Possible Outcomes 

Percent Formula
Part = 
Percent * Whole


The 3 exterior angles of a triangle add up to

360 degrees


In any triangle, the sume of the measure os the three angles is

180 degrees
x+y+z = 180 

In any triangle
1) The longest side 
= is the opposite the largest angle


2) the shortest side

= is the opposite the smallest angle


3)Sides with the same length

= Are opposite angles with the same measure


In a 454590 right triangle, the sides are =

X, X, and X square 2


In a 306090 right triangles, the sides are =

X, X Square 3 and 2X


Area of Right trinagle =

1/2 * base * height


Area of an equilateral triangle with equal sides =

2
S * Square 3  4 

In any quadrilateral, the sume of the measures of the four angles

= 360 degrees


For Parallelogram
Area = 
Base * Height


Perimeter of Pallelogram =

2(a + b)


Area of Rectangele =

Length * Width


Perimeter of Rectangel =

2(L + W)


Area of a Square =

2
S 

Area of a square can also be =

1 2
 d 2 

Perimeter of a square =

4s (s = sides)


Diameter of a circle =

2* radiuis


Circumference of a Cirle =

PI * D = 2 PI R


Area of a circle =

2
PI r 

Length of an Arc

(n/360) * (2PI r)


Area of a sector, if n is the degree measure of the sector's central angle =

2)
(n/360) * (PI r PI * R square 

Surface Area of Rectangular =

2(LW +LH + WH)= 2LW +LH +2 WH


Suface Area of cube =

6e square
6 * e square 

Volume of a cylider =

PI * R square * height


Surface of a cylinder =

2PI r h


Volume of a Rectangular solid =

L * W * H


Volume of a cube =

3
L * L * L = L 

Average speed =

Total Distance
 Total time 

Average A per B =

Total A
 Total B 

Probability formula
Probability = 
Number of Favorable Outcome/
Total no. of Possible Outcomes 

If E is impossible, then P(E) =

0


If it is certain that E will occur, then P(E)=

1


In all other cases

0 <P(E)<1


The probability that the even E will not occur =

1 P(E)


Counting principle: if two jobs need tobe completed and there are m ways to do the first job and n ways to the second job, then there are

m * n ways to do one job followed by th eother
