Multiplication Concept (k-12math.info)

Multiplication
Multiplication is often written using the multiplication sign "×" between the terms; that is, in infix notation. The result is expressed with an equals sign. For example, [math]2\times 3 = 6[/math] (verbally, "two times three equals six") [math]3\times 4 = 12[/math] [math]2\times 3\times 5 = 6\times 5 = 30[/math] [math]2\times 2\times 2\times 2\times 2 = 32[/math] There are several other common notations for multiplication: Multiplication is sometimes denoted by either a middle dot or a period: [math]5 \cdot 2 \quad\text{or}\quad 5\,.\,2[/math] The middle dot is standard in the United States, the United Kingdom, and other countries where the period is used as a decimal point. In other countries that use a comma as a decimal point, either the period or a middle dot is used for multiplication. This extract is licensed under the Creative Commons Attribution-ShareAlike license. It uses material from the article "Multiplication", retrieved 12 Dec 2009.