Common Multiplication
Revision as of 18:30, 30 December 2010 by Williamhu888 (talk | contribs)
In ordinary arithmetic, multiplication is an arithmetic operation. It is represented by parentheses, the sign, and the
sign. The result of multiplying is the product. If one of the numbers is a whole number, multiplication is the repeated sum of that number. For example,
. The inverse of multiplication is division.
To multiply fractions, the numerators and denominators are multiplied: .
Properties
- Commutative property:
- Associative property:
- Distributive property:
- Zero property:
- Identity property:
- Inverse property: For any
,
Note that is
's reciprocal. As long as a number is not equal to 0, the product of that number and its reciprocal is 1.
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