1st semster review flashcards
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Least Common Multiple
(LCM)  the smallest number that all numbers can become  uses the cake method (never smaller than the biggest number)

Greatest Common Factor
(GCF)  the biggest number that all of the numbers can be divided by  uses the tree method (never bigger than the smallest number)
 factor

a number that divides another number without a remainder (always equal to or smaller than the original number)
ie. factors of 24 = 1, 2, 3, 4, 6, 8, 12, 24  multiple

the product of the original number and another number (always equal to or larger than the original number)
ie. multiples of 5 = 5, 10, 15, 20, 25  ascending order
 from smallest to biggest
 descending order
 from biggest to smallest
 absoute value
 the distance the number is from zero on a number line  the distance can NEVER be negative
 composite number
 a whole number that has factors besides 1 and itself  the smallest composite number is 4
 prime number
 a whole number whose only factors are 1 and itself  2 is the smallest prime and the ONLY even prime
 coordinate pairs
 used in graphing  (x,y)  the first number tells you right or left; the second number tells you up or down
 divisibility rule for 2
 if the number ends in 0, 2, 4, 6, or 8
 divisibility rule for 5
 if the number ends in 0 or 5
 divisibility rule for 6
 if it is divisible by BOTH 2 and 3
 divisibility rule for 10
 if it ends in 0
 divisibility rule for 3

if the sum of the digits adds up to a number divisibile by 3
ie. 123 = 1 + 2 + 3 = 6; 6 is divisibile by 3 so 123 is divisible by 3  divisbility rule for 9

if the sum of the digits is divisible by 9
ie. 63 = 6 + 3 = 9; 9 is divisible by 9 so 63 is divisible by 9  equivalent
 equal
 equivalent fractions
 two or more fractions that are equal to each other
 equivalent decimals
 two or more decimals that are equal to each other
 exponent
 shows repeated multiplication
 factor tree
 used for prime factorization; used to find a numbre's prime factors
 frequency table
 a 3 column chart that lists the items, a tally section, and the frequency
 improper fraction
 when the numerator (top number) is bigger than the denominator (bottom number)
 numerator
 the top number in a fraction
 denominator
 the bottom number in a fraction
 integers

a set of whole numbers and their opposites
NOTE: 0 is not an integer  inverse operations

opposite operations; they undo each other
addition  subtraction
multiplication  division 
Least Common Denominator
(LCD)  smallest common denominator a set of fractions can become
 line plot
 uses a number line and x's to represent data
 mean
 the average of the data  add up all of the data and divide by the number of items in the data
 median
 the middle number of a set of data in numerical order
 mode
 the most common number(s) of the set of data
 range
 the difference betwen the biggest and the smallest numbers in a set of data; subtract big minus small
 order of operations

1. Parenthesis
2. Exponents
3. Multiply and Divide from LEFT to RIGHT
4. Add and Subtract from LEFT to RIGHT  origin
 (0,0)  where you start from when graphing ordered pairs
 power
 a number expressed using an exponent
 prime factorization

uses factor trees to write the number as a product of its primes
ie. 24 = 2 x 2 x 2 x 3  probability
 the number of correct chances over the total number of chances
 scientific notation
 a number written as a prduct of two factors when the first is a number greater than 1 but less than 10 and the second is a power of 10
 slope
 rise over run; up or down over the left or right
 square root
 a number which when multiplied by itself equals the given number
 symmetry
 when one side of a figure is the mirror image of the other side
 terminating decimal
 a decimal that stops
 repeating decimal
 a number that repeats itself in a pattern
 variable
 a symbol, usually a letter, that stands for a number; an unknown
 x  axis
 the horizontal bar of a graph
 y  axis
 the vertical bar of a graph