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  2. Division (mathematics) - Wikipedia

    en.wikipedia.org/wiki/Division_(mathematics)

    In terms of partition, 20 / 5 means the size of each of 5 parts into which a set of size 20 is divided. For example, 20 apples divide into five groups of four apples, meaning that "twenty divided by five is equal to four". This is denoted as 20 / 5 = 4, or ⁠ 20 / 5 ⁠ = 4. [2] In the example, 20 is the dividend, 5 is the divisor, and 4 is ...

  3. Scientific notation - Wikipedia

    en.wikipedia.org/wiki/Scientific_notation

    Any real number can be written in the form m × 10 ^ n in many ways: for example, 350 can be written as 3.5 × 10 2 or 35 × 10 1 or 350 × 10 0. In normalized scientific notation (called "standard form" in the United Kingdom), the exponent n is chosen so that the absolute value of m remains at least one but less than ten ( 1 ≤ | m | < 10 ).

  4. Shaku (unit) - Wikipedia

    en.wikipedia.org/wiki/Shaku_(unit)

    Traditionally, the actual length of the shaku varied over time, location, and use. By the early 19th century, the shaku was largely within the range of 0.30175 to 0.303 meters (11.880 in to 11.929 in), [1] but a longer value of the shaku (also known as the kōrai-shaku) was also known, and was 1.17 times longer than the present value (35.5 centimeters or 14.0 inches).

  5. Significant figures - Wikipedia

    en.wikipedia.org/wiki/Significant_figures

    For example, to round 1.25 to 2 significant figures: Round half away from zero rounds up to 1.3. This is the default rounding method implied in many disciplines [citation needed] if the required rounding method is not specified. Round half to even, which rounds to the nearest even number. With this method, 1.25 is rounded down to 1.2.

  6. Milliradian - Wikipedia

    en.wikipedia.org/wiki/Milliradian

    ⁠ 0.25 / 10 ⁠ mrad, ⁠ 1 / 8 ⁠ ′ and ⁠ 0.5 / 10 ⁠ mrad are used in speciality scope sights for extreme precision at fixed target ranges such as benchrest shooting. Some specialty iron sights used in ISSF 10 m , 50 m and 300 meter rifle come with adjustments in either ⁠ 0.5 / 10 ⁠ mrad or ⁠ 0.25 / 10 ⁠ mrad.

  7. Duodecimal - Wikipedia

    en.wikipedia.org/wiki/Duodecimal

    The duodecimal system, also known as base twelve or dozenal, is a positional numeral system using twelve as its base.In duodecimal, the number twelve is denoted "10", meaning 1 twelve and 0 units; in the decimal system, this number is instead written as "12" meaning 1 ten and 2 units, and the string "10" means ten.

  8. List of scale model sizes - Wikipedia

    en.wikipedia.org/wiki/List_of_scale_model_sizes

    1:30.5: 10 mm Often quoted as the alternative to 1:32 scale. 1:30: 0.4 in: 10.16 mm Toy soldiers and military vehicles including King & Country and Figarti. 1:29: 10.51 mm American model trains running on 45 mm Gauge 1 track. 1:28: 10.89 mm Biplane fighters, "brass era" cars (Midori, Union, Revell of Germany), die-cast cars (Spec-cast, First ...

  9. Octal - Wikipedia

    en.wikipedia.org/wiki/Octal

    The octal representation is formed by the quotients, written in the order generated by the algorithm. For example, to convert 125 10 to octal: 125 = 8 2 × 1 + 61 61 = 8 1 × 7 + 5 5 = 8 0 × 5 + 0. Therefore, 125 10 = 175 8. Another example: 900 = 8 3 × 1 + 388 388 = 8 2 × 6 + 4 4 = 8 1 × 0 + 4 4 = 8 0 × 4 + 0. Therefore, 900 10 = 1604 8.