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Mathematics

Grades 3–4 Mathematics Vocabulary

18 essential words with definitions, examples, and quick-check quizzes.

Algebra
noun
The branch of mathematics that uses letters and symbols to represent unknown val...
Average
noun
A number representing the central value in a set, found by adding all values and...
Coordinate
noun
A pair of numbers that describes a point's position on a grid using horizontal a...
Decimal
noun
A number that uses a decimal point to show values less than one whole....
Exponent
noun
A number that tells how many times a base number is multiplied by itself....
Factor
noun
A number that divides evenly into another number without a remainder....
Integer
noun
A whole number, either positive, negative, or zero, with no fractional parts....
Mean
noun
The average of a set of numbers, found by dividing their sum by the count....
Median
noun
The middle value in a set of numbers arranged in order....
Mode
noun
The value that appears most often in a set of data....
Polygon
noun
A flat, closed shape with three or more straight sides....
Prime Number
noun
A whole number greater than 1 that has only two factors: 1 and itself....
Probability
noun
The likelihood that a particular event will occur, expressed as a fraction or pe...
Proportion
noun
A statement that two ratios or fractions are equal....
Ratio
noun
A comparison of two numbers by division, showing how many times one value contai...
Square Root
noun
A number that when multiplied by itself gives the original number....
Variable
noun
A letter or symbol representing an unknown value in an equation....
Volume
noun
The amount of three-dimensional space that an object occupies, measured in cubic...

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