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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 size ...
one of four equal parts into which something is divided, as a quarter-hour or, especially for financial purposes, a quarter of a year; in generic usage (as in fractions), US usu. fourth: 25 cents (a fourth of a dollar) queue a group of persons, usually waiting for something, arranged in order of arrival *(US: line)
A just perfect fifth has a size of 3:2 (about 701.96 cents), and four of them are equal to 81:16 (about 2807.82 cents). A just major third has a size of 5:4 (about 386.31 cents), and one of them plus two octaves (4:1 or exactly 2400 cents) is equal to 5:1 (about 2786.31 cents). The difference between these is the syntonic comma.
Microsoft Word, for instance, suggests every even size between 8 and 28 points and, additionally, 9, 11, 36, 48 and 72 points (the font sizes 36, 48 and 72 equal 3, 4 and 6 picas respectively). While most software nowadays defaults to DTP points, many allow specifying font size in other units of measure (e.g., inches, millimeters, pixels ...
When an object is divided into equal parts, each part is a unit fraction of the whole. Multiplying two unit fractions produces another unit fraction, but other arithmetic operations do not preserve unit fractions. In modular arithmetic, unit fractions can be converted into equivalent whole numbers, allowing modular division to be transformed ...
As for fractions, the simplest form is considered that in which the numbers in the ratio are the smallest possible integers. Thus, the ratio 40:60 is equivalent in meaning to the ratio 2:3, the latter being obtained from the former by dividing both quantities by 20. Mathematically, we write 40:60 = 2:3, or equivalently 40:60∷2:3.
May 4 (month-day date notation) 5 April (day-month date notation) 5 4, a time signature containing five quarter notes per measure, see quintuple meter; Just major third "5/4", a song (with the above time signature) by Sunny Day Real Estate from their 1995 album Sunny Day Real Estate "5/4" (song), a song by Gorillaz from their 2001 album Gorillaz
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 square of side length one, here dissected into rectangles whose areas are successive powers of one half. A number raised to the power of one half is equal to its square root.