Algebra Flashcards
Quiz 1 (31 cards)
Quantity
Anything that can be measured or counted
Variable Quantities
Values that can change or vary
Variable
A symbol, usually a letter, that represents the value of a quantity.
algebraic expression
a mathematical phrase that includes one or more variables.
numerical expression
a mathematical phrase involving numbers and operation symbols, but no variables
power
has a base part and an exponent part
exponent
tells you how many times to use the base as a factor
factor
numbers that are multiplied to find a product
base
the factor that is repeated in a power
simplify
a numerical expression that is replaced with its single numerical value
evaluate
replacing each variable with a given number and calculate
perfect square
the square of an integer
square roots
the number that was multiplied by itself to find a product
principal square root
non-negative square root
radicand
expression under the square root symbol
radical
square root symbol and radicand together
set
a well-defined collection of objects
elements
each object in a set
subset
consists of elements from within the given set
rational numbers
any number that you can write as a fraction. i.e. 1/2
natural numbers
counting numbers starting at one and going higher {1,2,3,…}
whole numbers
counting numbers and including zero. i.e. {0,1,2,3,…}
integers
whole numbers and including their opposites. i.e. {…-2,-1,0,1,2,…}
irrational numbers
cannot be written as a fraction
