Negative number

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This thermometer is indicating a negative temperature (namely, −4 °F).

A negative number is a real number that is less than zero. Such numbers are often used to represent the amount of a loss or absence. For example, a debt that is owed may be thought of as a negative asset, or a decrease in some quantity may be thought of as a negative increase. Negative numbers are used to describe values on a scale that goes below zero, such as the Celsius and Fahrenheit scales for temperature.

• See also: Wikipedia

• Related: Additive inverse, History of zero, Integers, Positive and negative parts, Rational numbers, Real numbers, Sign function, Signed number representations

Maseres' biographical information Maseres' biographical information www-history.mcs.st-andrews.ac.uk/.../Maseres.html - Web

BBC Radio 4 series "In Our Time," on Negative Numb... BBC Radio 4 series "In Our Time," on Negative Numbers, 9 March 2006 www.bbc.co.uk/radio4/history/inourtime/inourtime_20060309.shtml - Web

Endless Examples & Exercises: Operations with Sign... Endless Examples & Exercises: Operations with Signed Integers www.free-ed.net/.../SignedValues01_EE.asp - Web

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Math Forum: Ask Dr. Math FAQ: Negative Times a Neg... Math Forum: Ask Dr. Math FAQ: Negative Times a Negative mathforum.org/dr.math/faq/faq.negxneg.html - Web

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