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correctness, the exact answer, the opposite of estimating


an angle that is less than a 90 degree angle


a measure of how likely it is that some event will occur

Common fraction

a number that represents part of a whole

Composite number

a whole number that has factors other than 1 and itself example: 9's factors are 1, 3, 9 and 6's factors are 1, 2, 3, 6


using mathematical methods to find the solution to a problem


to change from one unit of measure to another unit of measure. example: change 4 cups to 1 quart

Coordinate grid

a grid formed by two number lines called the x-axis and the y-axis


a chord that passes through the center of the circle


a number sentence with an equal (=) sign


one or more numbers and / or variables that are connected by operation signs operation signs are + -

Face of a polyhedron

a flat surface on a three - dimensional figure

Function table

a table that has input and output and the quantities depend on one another

Improper fraction

a fraction with a numerator that is greater than or equal to the denominator


the number found by dividing the sum of a set of numbers by the number of addends

Inverse Operation

operations that undo each other

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