Whois & Analysis for xtramath.org

Subtraction is a mathematical operation that represents the operation of removing objects from a collection.

It is signified by the minus sign (−).

For example, in the picture on the right, there are 5 − 2 apples—meaning 5 apples with 2 taken away, which is a total of 3 apples.

Therefore, 5 − 2 = 3.

Subtraction represents removing or decreasing physical and abstract quantities using different kinds of objects including negative numbers, fractions, irrational numbers, vectors, decimals, functions, and matrices.

Multiplication (often denoted by the cross symbol "×", by a point "·", by juxtaposition, or, on computers, by an asterisk "∗") is one of the four elementary, mathematical operations of arithmetic; with the others being addition, subtraction and division.

Addition (often signified by the plus symbol "+") is one of the four basic operations of arithmetic, with the others being subtraction, multiplication and division.

Division is one of the four basic operations of arithmetic, the others being addition, subtraction, and multiplication.

The division of two natural numbers is the process of calculating the number of times one number is contained within one another.

For example, in the picture on the right, the 20 apples are divided into groups of five apples, and there exist four groups, meaning that five can be contained within 20 four times, or.

Division can also be thought of as the process of evaluating a fraction, and fractional notation (and) is commonly used to represent division.

or pupil is a learner or someone who attends an educational institution.

In Britain those attending university are termed "students".

In the United States, and more recently also in Britain, the term "student" is applied to both categories.

In its widest use, student is used for anyone who is learning, including mid-career adults who are taking vocational education or returning to university.

When speaking about learning outside an institution, "student" is also used to refer to someone who is learning a topic or who is "a student of" a certain topic or person.