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# Math 7 2018-2019

### SSC 7th Grade Math Vocabulary

TermDefinition
Absolute value A number's distance from zero
Expression Numbers, symbols and/or operations grouped together that show the value of something
Associative property For all real numbers, the sum or the product is always the same, regardless of their grouping
Circumference the distance around a circle
Commutative property all real numbers can be added or multiplied in any order with out changing the answer.
Complementary angles two angles that add to 90 degrees
Compound event two or more simple events
Constant a fixed value (a value that does not change)
Distributive property a property that lets you multiply a sum or difference by multiplying each term separately and then adding or subtracting the products
Inequality A mathematical sentence that shows the relationship between quantities that are not equal
Percent of change the amount stated as a percent that a number increases or decreases
Perpendicular lines intersecting lines that form right angles
Probability the chance that something will happen - how likely it is that some event will happen
Proportion two ratios (or fractions) that are equal
Rate a ratio that compares two quantities measured in different units
Scale The ratio of the length in a drawing (or model) to the length of the real thing
Similar figures with the same shape but not necessarily the same size
Straight angle an angle that is exactly 180 degrees
Supplementary angles two angles that add to 180 degrees
Surface area The sum of the areas of the faces of a 3D figure.
Vertical angles A pair of opposite congruent angles formed by intersecting lines
Volume The number of cubic units needed to fill a given space
Experimental probability The ratio of the number of times an event actually occurs to the total number of trials performed
Theoretical probability The ratio of the number of ways an outcome could happen to the number possible outcomes
Integer whole numbers, their opposites, and zero
Created by: Kim.Mendoza