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Unit One: Chapter One: Terms
Unit one: Number and Operations: Rational - Chapter One: Algebra: Integers
12
Mathematics
8th Grade
07/14/2009

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Term
algebraic expression
Definition
a combination of variables, numbers, and at least one operation
Term
equations
Definition
a mathematical sentence that contains an equals sign
Term
integers
Definition
the set of whole numbers and their opposites
Term
variable
Definition
a symbol, usually a letter, used to represent a number in mathematical expressions or sentences
Term
conjecture
Definition
an educational guess
Term
algebra
Definition
the branch of mathematics that involves expressions with variables
Term
counterexample
Definition
a statement or example that shows a conjecture is false
Term
evaluate
Definition
to find the value of an expression by replacing the variables with numerals
Term
numerical expression
Definition
a mathematical expression that has a combination of numbers and at least one operation
Term
order of operations
Definition
the rules to follow when more than one operation is used in an expression
Term
powers
Definition
Numbers written using exponents. Powers represent repeated multiplication
Term
property
Definition
an open sentence that is true for any numbers
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