Difference between revisions of "Common Multiplication"
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* Distributive property: <math>a(b+c)=ab+ac</math> | * Distributive property: <math>a(b+c)=ab+ac</math> | ||
* Identity property: <math>a\times1=a</math> and <math>a\times0=0</math> | * Identity property: <math>a\times1=a</math> and <math>a\times0=0</math> | ||
| − | * Any number, except | + | * Any number, except [[zero (constant) | zero]], multiplied by its reciprocal is equal to 1: <math>x\times\frac{1}{x}=1</math> |
Revision as of 00:56, 6 November 2006
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In mathematics, multiplication is an arithmetic operation. 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:
- Identity property:
and 
- Any number, except zero, multiplied by its reciprocal is equal to 1:
and 
