vulgar fraction
81Small number — Within a set of positive numbers, a number is small if it is close to zero. A number is smaller if it is less than another number.Within a set of positive and negative numbers there is ambiguity, because being closer to zero does not correspond… …
82Invalid proof — In mathematics, there are a variety of spurious proofs of obvious contradictions. Although the proofs are flawed, the errors, usually by design, are comparatively subtle. These fallacies are normally regarded as mere curiosities, but can be used… …
83Visual acuity — 20/15 and 20/15 vision redirect here. For other uses, see 2020 (disambiguation). Typical Snellen chart used for visual acuity testing. Visual acuity (VA) is acuteness or clearness of vision, which is dependent on the sharpness of the retinal… …
84Academic Games — is a U.S. competition in which players win by out thinking each other in mathematics, language arts, and social studies. Formal tournaments are organized by local leagues, and on a national level by the Academic Games Leagues of America (AGLOA).… …
85List of eponymous laws — This list of eponymous laws provides links to articles on laws, adages, and other succinct observations or predictions named after a person. In some cases the person named has coined the law – such as Parkinson s law. In others, the work or… …
86Fifth grade — (called Grade 5 in some regions) is a year of education in the United States and many other nations. The fifth grade is the fifth school year after kindergarten. Students are usually 10 11 years old. Depending on the school district, in certain… …
87First grade — (called Grade 1 in some regions) is a year of education in the United States and other nations. The first grade is the first school year after kindergarten. Students are usually 6 7 years old. It is a part of primary education. *In mathematics… …
88List of nicknames of British Army regiments — Nicknames of regiments and other units of the British Army.* The Agile and Suffering Highlanders The Argyll and Sutherland Highlanders * The Argyll Marines The Argyll and Sutherland Highlanders * The Bairns The Scots Guards * The Bengal Tigers… …
89Greatest common denominator — The greatest common denominator is a meaningless term, sometimes mistakingly used when one actually wishes to refer to either* the lowest common denominator, which is the least common multiple of the denominators of a set of vulgar fractions. *… …
90Numerical prefix — Numerical prefixes are usually derived from the words for numbers in various languages, most commonly Greek and Latin, although this is not always the case.* They occur in 19th, 20th and 21st century coinages, mainly the terms that are used in… …
