Math Flashcards
Integer
Positive or negative whole number. No fractions or decimals
Prime
Whole number greater than 1 that can only be evenly divided by 1 or itself
Composite #
whole number greater than 1 that has more than 2 factors
Rational number
includes al integers, decimals, and fractions. Any terminating or repeating number is a rational number
Irrational
can’t be written as decimals because number of decimal places is infinite. Ex) pi
Thousands
1000
Thousandths
0.001
Prime factor
Also a prime number. Ex) prime factor of 12 are 2 and 3
Greatest common factor
largest number that’s a factor of 2 or more numbers
Least common multiple
smallest number that a multiple of two or more numbers. Ex) LCM for 3 and 5 is 15
a^1
a
1^n
1
a^n * a^m
a^(n+m)
a^n/a^m
a^(n-m)
(a^n)^m
a^(n*m)
(a*b)^n
(a/b)^n
a^n * b^n
a^n / b^n
a^-n
1/(a^n)
if a = sqrt(b)
a*a=b
Perfect square
a number that has an integer for its square root
ex)1, 4, 9, 16, 25…
undefined fraction
has denominator of zero
proper fraction
have denominator that’s greater than numerator
Percentage Equation
P = w*%
Part = whole * percentage
decimals to fractions
0.24 = 0.24/1 *(100/100) = 24/100 = 6/25
rational
number is rational if it can be represented by a fraction a/b where a and b are integers and b doesn’t equal zero