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# Pre-Algebra midterm

### Chapters 1-4 vocabulary

a letter that stands for a number variable
a mathematical phrase that uses variables, numerals, and operation symbols variable expression
an agreed upon process for simplifying an expression order of operations
to replace each variable with a number and when used the order of operations to simplify evaluate
numbers that are the same distance from zero on a number line opposites
whole numbers and their opposites integers
a number's distance from zero on the number line absolute value
the horizontal number line on a coordinate plane x-axis
the vertical number line on a coordinate plane y-axis
x- and y- axes divide the coordinate plane into four ________________________ quadrants
coordinates and location of a point ordered pair
when you add a number and 0, the sum equals the original number additive identity
when you multiply a number and 1, the product equals the original number multiplicative identity
a number or the product of a number and a variable term
a number that does not vary or a term that has no variable constant
the number that multiples a variable coefficient
5x and 7x are called _________ _________ like terms
a mathematical sentence with an equal sign equation
an equation with one or more variables open sentences
a value for a variable that makes an equation true solution
a mathematical sentence that contains > or < inequality
changing the order of the addends or factors does not change the answer commutivative properties of + and *
changing the grouping of the addends or factors does not change the answer associative properties of + and *
to multiply a number outside parentheses by each term of a sum or difference inside the parentheses distributive property
numbers that are easy to work with mentally compatible numbers
mean, median, and mode are called the _____________________________________ of a collection of data measures of central tendency
the sum of the data values divided by the sum of the data mean
the middle number when data values are arranged in order median
the data item that occurs most often mode
a data value that is much greater or less than the other data values outlier
an equation that shows a relationship between quantities that are represented by variables formula
the distance around a figure perimeter
when one number divides into another number with no remainder divisible
the number used as the factor when writing a power base
a number with more than two factors composite number
numbers that are multipled together are called ______________________ factors
number that tells you how many times to multiply a factor exponents
a number with two factors, 1 and itself prime numbers
the product of a set of prime numbers prime factorization
the largest number that divides into two or more numbers GCF
a number written in a/b form rational number
Created by: ahastings