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# Math Vocab

### middle school math vocabulary

absolute value the distance from the number zero on the number line
less than subtract
equation mathematical sentence with an equal sign (=)
order of operation Parentheses, Exponents, Multiplication, Division, Addition, Subtraction
product multiply
ascending going up, growing in number
descending going down, lessening in number
variable a letter or number that stands in for an unknown part of a problem
decimal system a system based on TEN
equivalent equal; the same
factor a whole number that divides exactly into another number; 5 is a factor of 10
greater than MORE than
less than SMALLER than
rational number a number that can be written as a fraction
standard form The usual form for representing numbers.
improper fraction a fraction where the numerator (number on top) is larger than the denominator (number on bottom)
square root A number that can be multiplied by itself to equal a given number.
independent event The probability of one event happening without impacting another event.
scientific notation A way to express very large and very small numbers using a power of ten.
dependent event The probability of one event happening that affects another event.
inequality A mathematical sentence including <, >, <, and >.
irrational number a number that does not terminate
compound probability The probability of the first event multiplied by the probability of the second event.