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Thorpe Pre-Algebra Chapter 1
Chapter 1 Vocabulary
22
Mathematics
8th Grade
03/19/2009

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Term
algebraic expression
Definition
A combination of variables, numbers, and at least one operation
Term
numerical expression
Definition
a mathematical expression that has a combination of numbers and at least one operation
Term
evaluate
Definition
to find the value of an expression by replacing the variables with numerals
Term
order of operations
Definition
the rules to follow when more than one operation is used in an expression
Term
variable
Definition
a symbol, usually a letter, used to represent a number in mathematical expressions or sentences
Term
powers
Definition
numbers written using exponents
Term
equation
Definition
a mathematical sentence that contains the equal sign (=)
Term
negative number
Definition
a number that is less than zero
Term
integer
Definition
the set of whole numbers and their opposites
Term
inequality
Definition
a mathematical sentence that contains < or >
Term
absolute value
Definition
the distance a number is from zero on the number line
Term
opposites
Definition
two numbers with the same absolute value but different signs. Their sum is zero
Term
addend
Definition
numbers that are added together
Term
sum
Definition
the result when two or more numbers are added together
Term
factor
Definition
numbers that are multiplied together
Term
product
Definition
the result when two or more numbers are multiplied together
Term
define a variable
Definition
choosing a variable and a quantity for the variable to represent in an expression
Term
solve
Definition
to find the value of the variable that makes the equation true
Term
solution
Definition
the value for the variable that makes an equation true
Term
inverse operations
Definition
pairs of operations that undo each other
Term
identity property of multiplication
Definition
the product of a number and 1 is that same number
Term
base (of a power)
Definition
in a power, the number used as a factor
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