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# CC2 Ch. 3

TermDefinition
Additive Inverse The number you need to add to a given number to get a sum of 0.
Algebraic Expression A combination of individual terms separated by plus or minus signs. It does not have an “equals” sign.
Associative Property If a sum contains terms that are grouped, then the sum may be regrouped with no effect on the total: a + (b +c) = (a + b) + c. If a product contains terms that are grouped, then the product may be regrouped with no effect on the result: a(bc) = (ab)c.
Commutative Property If two terms are added, then the order may be reversed with no effect on the total. That is, a + b = b + a . If two expressions are multiplied, then the order may be reversed with no effect on the result. That is, ab = ba .
Evaluate To find the numerical value of. To do this, substitute the value(s) given for the variable(s) and perform the operations according to the order of operations.
Integers The set of numbers {…, –3, –2, –1, 0, 1, 2, 3, …}.
Multiplicative Inverse For a non-zero number, it is the number we can multiply by to get the multiplicative identity, For example, for the number 5, the multiplicative inverse is 1/5.
Numerical Term Single numbers or products of numbers.
Order of Operations The order in which operations are to be carried out to evaluate or simplify expressions: parentheses, exponents (powers or roots), multiplication or division (from left to right), and addition or subtraction (from left to right).
Quotient The result of a division problem.
Rational Numbers Numbers that may be expressed in the form a/b , where a and b are integers and b ≠ 0.
Reciprocals The reciprocal of a nonzero number is its multiplicative inverse, that is, the reciprocal of x is 1/x.
Simplify To write a less complicated expression with the same value. It has no parentheses and no like terms.
Substitution Replacing one symbol with a number, a variable, or another algebraic expression of the same value. It does not change the value of the overall expression.
Terms A single number, variable, or the product of numbers and variables,
Created by: EMarshall8

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