Easy-to-understand definitions, with illustrations and links to further reading. Browse the definitions using the letters below, or use Search above.

In basic mathematics there are many ways of saying the same thing ... ... bringing two or more numbers (or things) together to make a new total.

Illustrated mathematics dictionary index for the letter A

Apr 19, 2010 · Math explained in easy language, plus puzzles, games, worksheets and an illustrated dictionary. For K-12 kids, teachers and parents.

Illustrated definition of Expression: Numbers, symbols and operators (+, minus;, x, divide;, etc) put together to represent a value. Examples:...

Illustrated definition of Congruent: The same shape and size (but we are allowed to flip, slide or turn). In this example the shapes are congruent,...

Illustrated definition of Difference: The result of subtracting one number from another. How much one number differs from another. Example: The difference...

Illustrated definition of Mean: The Arithmetic Mean is the average of the numbers: a calculated central value of a set of numbers. To...

Illustrated definition of Sum: The result of adding two or more numbers. Example: 9 is the sum of 2, 4 and 3 (because 2 + 4 + 3 = 9). Drag...

Illustrated definition of Mathematics: The study of numbers, patterns, space, and change.