Calculations with numbers are done with arithmetical operations, the most familiar being addition, subtraction, multiplication, division, and exponentiation. Their study or usage is called arithmetic, a …

Number is regularly used with plural count nouns (such as people or reasons) which refer to a quantity of individually countable items. while amount is mainly used with mass nouns (such as time or …

1. To call off numbers; count: numbering to ten. 2. To have as a total; amount to a number: The applicants numbered in the thousands.

Number, any of the positive or negative integers or any of the set of all real or complex numbers, the latter containing all numbers of the form a + bi, where a and b are real numbers and i denotes the …

Illustrated definition of Number: A count, measurement or idea of a value. We write or talk about numbers using numerals such as 5 or five....

A number can be thought of as a concept or an idea that indicates how many or how much. There are many different classifications or categories of numbers, such as integers, negative numbers, prime …

NUMBER definition: a numeral or group of numerals. See examples of number used in a sentence.

Mathematics is a way to use numbers to learn about the world and make things. The study of the rules of the natural world is called science. The work that uses numbers to make things is called …

NUMBER meaning: 1 : a word or symbol (such as “five” or “16”) that represents a specific amount or quantity; 2 : a number or a set of numbers and other symbols that is used to identify a person or thing …