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a number used to multiply a variable

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## terms list

coefficient

a number used to multiply a variable

absolute value

how far a number is from zero

variable

a symbol for a number we don't know yet

integers can have fractions and decimals, whole numbers can't

what is the difference between integers and whole numbers

exponent

shows how many times a number is supposed to be multiplied

expression

numbers grouped together to show the value of something

equation

says two things are the same

expressions group numbers together to show value, equation shows that something is the same

what is the difference between expression and equation

prime number

a number that can only be divided by one and itself

complementary angles

two angles that add up to 90º

parallelogram

opposite sides are parallel

obtuse angle

angle is over 90º but less than 180º

perpendicular lines

lines that meet at right angles

congruent

same

factors

numbers you multiply to get more numbers

supplementary angles

two angles that add up to 180º

vertical angles

the angles across from each other when other angles cross

180º

What do the angles of a triangle add up to?

90º

What do the angles of a quadrilateral add up to?

commutative properties

changing the order of the values you are adding or multiplying does not change the sum or product

associative properties

changing the grouping of the values you are adding or multiplying does not change the sum pr product

identity properties

the sum of any number and zero is the original number

distributive property

to multiply a sum or difference, multiply each number within the parentheses by the number outside the parentheses

parentheses, exponent, multiply, divide, add, subtract

What does PEMDAS stand for?

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