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Module 3 Vocabulary- 7th grade gifted math
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Terms in this set (26)
Variable
A symbol, such as a letter, that represents a number
Expression
A symbol or combination of symbols used in algebra, containing one or more numbers, variables, and arithmetic operations. Does not include an equal sign.
Equivalent expressions
Expressions that evaluate to the same number. They are equal to each other.
Term
Each of the members of which an expression, a series of quantities, or the like, is composed, as one of two or more parts of an algebraic expression
Coefficient
A number or quantity placed before and multiplying another quantity, as 3 in the expression 3X.
Distributive property
This property lets you multiply a sum by multiplying each addend separately and then add the products
Factor
One of two or more numbers, algebraic expression's, or the like, that when multiplied together produce a given product
Additive identity property
Zero is the only number that when added to another number, the result is again that number.
Multiplicative identity property
One is the only number that when multiplied with another number, the result is that number again.
Equation
A statement of a quality between two numerical expressions
Solution
A number that when substituted for a variable, makes the equation a true number sentence
Adjacent angles
Two angles with a common side.
Vertical angles
Two angles whose sides form two pairs of opposite rays.
Angles on a line
The sum of the measures of two angles that share a ray and form a line is 180 degrees.
Angles at a point
The measure of all angles formed by 3 or more rays with the same vertex is 360 degrees
Expression in expanded form
An expression written as sums and/or differences of products whose factors are numbers, variables, or variables raised to whole number powers
Expressions in factored form
An expression that is a product of two or more expressions.
Expressions in standard form
An expression where all like terms have been combined.
Diameter of a circle
The length of any segment that passes through the center of the circle whose end points lie on the circle
Radius of a circle
Half the diameter
Circumference
The length around the circle
Pi
Denoted, is the value of the ratio given by the circumference to the diameter in a circle
Inequality
Like an equation that uses symbols like < or > instead of an equal sign.
Linear equation
And equation that makes a straight line when it is graphed.
Supplementary angles
Two angles that add up to 180 degrees.
Complementary angles
Two angles that add up to 90 degrees.
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