Mathematical Terms and Concepts

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Associative Property

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A property of some binary operations, which means that rearranging the parentheses in an expression will not change the result. For example, (a + b) + c = a + (b + c).

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Centimeter

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A unit of length in the metric system, equal to one hundredth of a meter.

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Commutative Property

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A property of some binary operations, which means that changing the order of the operands does not change the result. For example, a + b = b + a.

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Diagonal

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A line segment joining two non-adjacent vertices of a polygon or polyhedron.

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Distance

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The amount of space between two points, usually measured in units such as meters, kilometers, etc.

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Distributive Property

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A property indicating a multiplication distributed over addition or subtraction, such as a(b + c) = ab + ac.

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Inverse

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An element that, when combined with a given element in an operation, results in the identity element. For example, the inverse of a number in addition is its negative.

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Kilometer

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A unit of length in the metric system, equal to 1,000 meters.

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Liter

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A unit of volume in the metric system, equal to 1,000 milliliters.

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Mean

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The average of a set of numbers, calculated by dividing the sum of the numbers by the count of numbers.