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Gravity
Words that are key to understanding Pre-Algebra
Terms in this set (41)
absolute value
the distance a number is from zero
additive inverse
two numbers with the same absolute value but different signs
average
adding all the numbers and dividing by the number of numbers
inequality
a number sentence that includes < or >
integer
any positive whole number and its opposite
mean
adding all the numbers and dividing by the number of numbers
negative number
any number less than zero
opposites
two numbers with the same absolute value but different signs
expression
a number sentence that does not have an equal sign
order of operations
an agreed upon order that problems should be solved
variable
a letter that is used to represent an unknown number
simplify
to put into a simplier form
equation
a number sentence that has an equal sign
product
answer to a multiplication problem
quotient
answer to a division problem
term
the parts that make up an expression that are separated by + and -
like terms
terms that have the same variable
coefficient
the number in front of the variable
constant
a term that does not have a variable, the number
consecutive integers
integers in order
difference
to subtract
perfect square
the square of any integer
square root
the inverse (undo) of squaring a number
radical sign
the sign used to show square root
real numbers
the set of rational and irrational numbers
rational number
any number that can be written as a fraction where the denominator is NOT zero
irrational number
numbers that continue on and on, they do not repeat or terminate
whole number
any positive integer that is not a decimal or fraction, including zero
natural number
numbers that are used to count, DOES NOT include zero
origin
the point of intersection of the x and y axis on the coordinate plane
x-coordinate
also known as the abscissa, the first number in an ordered pair
y-coordinate
also known as the ordinate, the second number in an ordered pair
x-axis
the horizontal number line on a coordinate plane
y-axis
the vertical number line on a coordinate plane
ordered pair
a pair of numbers used to locate a point on the coordinate plane, written in the form (x-coordinate, y-coordinate)
hypotenuse
opposite the right angle, and always the longest side of any right triangle
legs of a right triangle
make up the right angle of any right triangle
Pythagorean Theorem
describes the relationship between the lengths of the legs and the hypotenuse for ANY right triangle.
multiple
the product of a particular whole number multiplied by any whole number
common multiple
multiples that two or more whole numbers have in common
least common multiple
the smallest multiple two or more numbers have in common
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