**Times**

**Multiplication** (often denoted by the cross symbol "**×**") is the mathematical operation of scaling one number by another. It is one of the four basic operations in elementary arithmetic (the others being addition, subtraction and division).

Because the result of scaling by whole numbers can be thought of as consisting of some number of copies of the original, whole-number products greater than 1 can be computed by repeated addition; for example, 3 multiplied by 4 (often said as "3 times 4") can be calculated by adding 4 copies of 3 together:

Here 3 and 4 are the "factors" and 12 is the "product".

Educators differ as to which number should normally be considered as the number of copies, and whether multiplication should even be introduced as repeated addition. For example 3 multiplied by 4 can also be calculated by adding 3 copies of 4 together:

Multiplication of rational numbers (fractions) and real numbers is defined by systematic generalization of this basic idea.

Multiplication can also be visualized as counting objects arranged in a rectangle (for whole numbers) or as finding the area of a rectangle whose sides have given lengths (for numbers generally). The area of a rectangle does not depend on which side you measure first, which illustrates that the order numbers are multiplied together in doesn't matter.

In general the result of multiplying two measurements gives a result of a new type depending on the measurements. For instance:

The inverse operation of multiplication is division. For example, 4 multiplied by 3 equals 12. Then 12 divided by 3 equals 4. Multiplication by 3, followed by division by 3, yields the original number.

Multiplication is also defined for other types of numbers (such as complex numbers), and for more abstract constructs such as matrices. For these more abstract constructs, the order that the operands are multiplied in sometimes does matter.

Read more about Times: Notation and Terminology, Computation, Products of Measurements, Properties, Axioms, Multiplication With Set Theory, Multiplication in Group Theory, Multiplication of Different Kinds of Numbers, Exponentiation, See Also

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### Famous quotes containing the word times:

“Time doth transfix the flourish set on youth

And delves the parallels in beauty’s brow,

Feeds on the rarities of nature’s truth,

And nothing stands but for his scythe to mow:

And yet to *times* in hope my verse shall stand,

Praising thy worth, despite his cruel hand.”

—William Shakespeare (1564–1616)

“I do not think I will ever become deadened, because I live in other people’s lives, I must admit there are *times* when it weighs me down because I can’t do some of the things I want.”

—Eleanor Roosevelt (1884–1962)

“I will find out where she has gone,

And kiss her lips and take her hands;

And walk among long dappled grass,

And pluck till time and *times* are done

The silver apples of the moon,

The golden apples of the sun.”

—William Butler Yeats (1865–1939)