enow.com Web Search

  1. Ads

    related to: fun math number tricks
  2. teacherspayteachers.com has been visited by 100K+ users in the past month

    • Resources on Sale

      The materials you need at the best

      prices. Shop limited time offers.

    • Projects

      Get instructions for fun, hands-on

      activities that apply PK-12 topics.

    • Worksheets

      All the printables you need for

      math, ELA, science, and much more.

    • Lessons

      Powerpoints, pdfs, and more to

      support your classroom instruction.

Search results

  1. Results from the WOW.Com Content Network
  2. Chinese mathematics - Wikipedia

    en.wikipedia.org/wiki/Chinese_mathematics

    Some Han mathematicians attempted to improve this number, such as Liu Xin, who is believed to have estimated pi to be 3.154. [4] Later, Liu Hui attempted to improve the calculation by calculating pi to be 3.141024. Liu calculated this number by using polygons inside a hexagon as a lower limit compared to a circle. [25]

  3. Fast inverse square root - Wikipedia

    en.wikipedia.org/wiki/Fast_inverse_square_root

    Lighting and reflection calculations, as in the video game OpenArena, use the fast inverse square root code to compute angles of incidence and reflection.. Fast inverse square root, sometimes referred to as Fast InvSqrt() or by the hexadecimal constant 0x5F3759DF, is an algorithm that estimates , the reciprocal (or multiplicative inverse) of the square root of a 32-bit floating-point number in ...

  4. History of mathematics - Wikipedia

    en.wikipedia.org/wiki/History_of_mathematics

    Islamic scholars carried knowledge of this number system to Europe by the 12th century, and it has now displaced all older number systems throughout the world. Various symbol sets are used to represent numbers in the Hindu–Arabic numeral system, all of which evolved from the Brahmi numerals. Each of the roughly dozen major scripts of India ...

  5. Mental calculation - Wikipedia

    en.wikipedia.org/wiki/Mental_calculation

    Another method is to simply multiply the number by 10, and add the original number to the result. For example: 17 × 11 17 × 10 = 170 170 + 17 = 187 17 × 11 = 187 One last easy way: If one has a two-digit number, take it and add the two numbers together and put that sum in the middle, and one can get the answer.

  6. Ghana National Science and Maths Quiz - Wikipedia

    en.wikipedia.org/wiki/Ghana_National_Science_and...

    The National Science and Maths Quiz is an annual science and mathematics content-based national level quiz competition for senior high schools in Ghana. It has been produced by Primetime Limited , an education-interest advertising and public relations agency, since 1993.

  7. Fibonacci sequence - Wikipedia

    en.wikipedia.org/wiki/Fibonacci_sequence

    The Fibonacci number series is used for optional lossy compression in the IFF 8SVX audio file format used on Amiga computers. The number series compands the original audio wave similar to logarithmic methods such as μ-law. [75] [76] Some Agile teams use a modified series called the "Modified Fibonacci Series" in planning poker, as an ...

  1. Ads

    related to: fun math number tricks