Division (mathematics)
In mathematics, especially in elementary arithmetic, division (÷) is an arithmetic operation. Specifically, if b times c equals a, written:
where b is not zero, then a divided by b equals c, written:
- a ÷ b = c
For instance,
- 6 ÷ 3 = 2
since
- 6 = 3 × 2
In the expression a ÷ b = c, a is called the dividend or numerator, b the divisor or denominator and the result c is called the quotient.
Conceptually, division describes two distinct but related settings. Partitioning involves taking a set of size a and forming b groups that are equal in size. The size of each group formed, c, is the quotient of a and b. Quotative division involves taking a set of size a and forming groups of size c. The number of groups of this size that can be formed, b, is the quotient of a and c.
Teaching division usually leads to the concept of fractions being introduced to students. Unlike addition, subtraction, and multiplication, the set of all integers is not closed under division. Dividing two integers may result in a remainder. To complete the division of the remainder, the number system is extended to include fractions or rational numbers as they are more generally called.
Read more about Division (mathematics): Notation, Division Algorithm, Division of Integers, Division of Rational Numbers, Division of Real Numbers, Division By Zero, Division of Complex Numbers, Division of Polynomials, Division of Matrices, Division in Abstract Algebra, Division and Calculus
Famous quotes containing the word division:
“In this world, which is so plainly the antechamber of another, there are no happy men. The true division of humanity is between those who live in light and those who live in darkness. Our aim must be to diminish the number of the latter and increase the number of the former. That is why we demand education and knowledge.”
—Victor Hugo (18021885)