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15 Cards in this Set

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 Variable a letter or other symbol that represents a number or set of numbers in an expression or an equation Term product of numbers and variables Expression a mathematical combination of numbers, variables and operations Sum the result of adding two numbers or quantities Difference the result obtained when one number is subtracted from another Product the result of multiplying two numbers or variables Quotient the result obtained from dividing one number or variable into another number or variable Equation a mathematical sentence stating that two expressions are equal Equivalent equal in value Communtative Property the mathematical rule that states that for any numbers x and y: x + y = y + x and xy=yx Associative Property the mathematical rule that states that the sum or product of a set of numbers is the same no matter how the numbers are grouped. (x+y)+z=x+(y+z) Distributive Property the mathematical rule that states that multiplying a sum by a number is the same as multiplying each addend by that number and then adding the products Equivalent Expression expressions that always result in the same number or have the same mathematical meaning for all replacement values of the variables. Like Terms terms that include the same variables raised to the same powers... like terms can be combined Order of Operations to find the answer to an equation, follow this four step process: 1. Do all operations ith parentheses first 2. simplify all numbers with exponents 3. multiply and divide in order from left to right 4. add or subtract in order from left to right