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  2. Multiplication table - Wikipedia

    en.wikipedia.org/wiki/Multiplication_table

    Figure 2 is used for the multiples of 2, 4, 6, and 8. These patterns can be used to memorize the multiples of any number from 0 to 10, except 5. As you would start on the number you are multiplying, when you multiply by 0, you stay on 0 (0 is external and so the arrows have no effect on 0, otherwise 0 is used as a link to create a perpetual cycle).

  3. Elementary mathematics - Wikipedia

    en.wikipedia.org/wiki/Elementary_mathematics

    A root of degree 2 is called a square root and a root of degree 3, a cube root. Roots of higher degree are referred to by using ordinal numbers, as in fourth root, twentieth root, etc. For example: 2 is a square root of 4, since 2 2 = 4. −2 is also a square root of 4, since (−2) 2 = 4.

  4. PDF - Wikipedia

    en.wikipedia.org/wiki/PDF

    The PDF 1.4 specification allowed form submissions in XML format, but this was replaced by submissions in XFDF format in the PDF 1.5 specification. XFDF conforms to the XML standard. XFDF can be used in the same way as FDF; e.g., form data is submitted to a server, modifications are made, then sent back and the new form data is imported in an ...

  5. Fifth grade - Wikipedia

    en.wikipedia.org/wiki/Fifth_grade

    Fifth grade (also 5th Grade or Grade 5) is the fifth or sixth year of formal or compulsory education. In the United States, this is mostly the last grade of primary school, but for some states, it could be the first year of middle school. Primary school generally goes from Kindergarten and ends in fifth or sixth grade. Students in fifth grade ...

  6. Primary school - Wikipedia

    en.wikipedia.org/wiki/Primary_school

    A primary school (in Ireland, India, the United Kingdom, [1] Australia, [2] New Zealand, [3] Trinidad and Tobago, Jamaica, South Africa, and Singapore [4]), elementary school, or grade school (in North America and the Philippines) is a school for primary education of children who are 4 to 10 years of age (and in many cases, 11 years of age).

  7. Time scale - Wikipedia

    en.wikipedia.org/wiki/Time_scale

    Time scale may refer to: Time standard, a specification of either the rate at which time passes, points in time, or both; A duration or quantity of time: Orders of magnitude (time) as a power of 10 in seconds; A specific unit of time; Geological time scale, a scale that divides up the history of Earth into scientifically meaningful periods

  8. List of Arduino boards and compatible systems - Wikipedia

    en.wikipedia.org/wiki/List_of_Arduino_boards_and...

    61.5 mm × 25 mm [ 2.4 in × 1.0 in ] USB 3.3 V 256 No 32 8 12 7 1 Announced: April 2, 2016: Arduino MKR Zero [6] ATSAMD21G18A 48 MHz minimal 61.5 mm × 25 mm [ 2.4 in × 1.0 in ] USB 3.3 V 256 No 32 Arduino 101 [7] Genuino 101: Intel Curie™ module [8] two tiny cores, an x86 and an ARC 32 MHz Arduino / Genuino

  9. Equation of time - Wikipedia

    en.wikipedia.org/wiki/Equation_of_time

    Ptolemy discusses the correction needed to convert the meridian crossing of the Sun to mean solar time and takes into consideration the nonuniform motion of the Sun along the ecliptic and the meridian correction for the Sun's ecliptic longitude. He states the maximum correction is 8 + 13 time-degrees or 5 ⁄ 9 of an hour (Book III ...