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One half is the rational number that lies midway between 0 and 1 on the number line. Multiplication by one half is equivalent to division by two, or "halving"; conversely, division by one half is equivalent to multiplication by two, or "doubling".
A half crown is equivalent to 2 shillings and sixpence, written 2/6 and pronounced "two and six". Pick and mix Rhymes with "twenty-six". 27 Duck and a crutch The number 2 looks like a duck (see '2') and the number 7 looks like a crutch. Gateway to Heaven Rhymes with "twenty-seven". 28 In a state "Two and eight" is rhyming slang for "state ...
A cake with one quarter (one fourth) removed. The remaining three fourths are shown by dotted lines and labeled by the fraction 1 / 4 A fraction (from Latin: fractus, "broken") represents a part of a whole or, more generally, any number of equal parts. When spoken in everyday English, a fraction describes how many parts of a certain ...
Number sign: Numero sign. Also known as "octothorpe", "hash" and "hashtag sign" Pound sign № Numero sign: Number sign: Obelus: Division sign, Dagger, Commercial minus, Index ( ) Parenthesis: Bracket, Angle bracket % Percent sign: Per mille (per 1,000), Basis point (per 10,000) ‰ Per mille: Percent, Basis point. Period: The end of a sentence ...
2. and + are the generalized numbers that are added to the real line to form the extended real line. 3. is the generalized number that is added to the real line to form the projectively extended real line. (fraktur 𝔠)
Alternatively, and for greater numbers, one may say for 1 ⁄ 2 "one over two", for 5 ⁄ 8 "five over eight", and so on. This "over" form is also widely used in mathematics. Fractions together with an integer are read as follows: 1 + 1 ⁄ 2 is "one and a half" 6 + 1 ⁄ 4 is "six and a quarter" 7 + 5 ⁄ 8 is "seven and five eighths"
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The section of the number line between two numbers is called an interval. If the section includes both numbers it is said to be a closed interval, while if it excludes both numbers it is called an open interval. If it includes one of the numbers but not the other one, it is called a half-open interval.