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  2. Mental calculation - Wikipedia

    en.wikipedia.org/wiki/Mental_calculation

    So the estimated square root of 15 is 3.875. The actual square root of 15 is 3.872983... One thing to note is that, no matter what the original guess was, the estimated answer will always be larger than the actual answer due to the inequality of arithmetic and geometric means. Thus, one should try rounding the estimated answer down.

  3. General Aptitude Test Battery - Wikipedia

    en.wikipedia.org/wiki/General_Aptitude_Test_Battery

    The aim of this practice was to meet affirmative-action goals and to counteract alleged racial bias in aptitude tests administered to job applicants,. [5] Race-norming was also applied to neuropsychological tests , to reduce the number of blacks theoretically misclassified as cognitively impaired.

  4. Arithmetic - Wikipedia

    en.wikipedia.org/wiki/Arithmetic

    Arithmetic is an elementary branch of mathematics that studies numerical operations like addition, subtraction, multiplication, and division. In a wider sense, it also includes exponentiation, extraction of roots, and taking logarithms. Arithmetic systems can be distinguished based on the type of numbers they operate on.

  5. Pre-assessment - Wikipedia

    en.wikipedia.org/wiki/Pre-assessment

    Pre-assessment is a test taken by students before a new unit to find out what the students need more instruction on and what they may already know. A pre-assessment is a way to save teachers time within the classroom when teaching new material.

  6. Outline of arithmetic - Wikipedia

    en.wikipedia.org/wiki/Outline_of_arithmetic

    Arithmetic is an elementary branch of mathematics that is widely used for tasks ranging from simple day-to-day counting to advanced science and business calculations. Essence of arithmetic [ edit ]

  7. The three Rs - Wikipedia

    en.wikipedia.org/wiki/The_three_Rs

    The three Rs [1] are three basic skills taught in schools: reading, writing and arithmetic", Reading, wRiting, and ARithmetic [2] or Reckoning. The phrase appears to have been coined at the beginning of the 19th century.

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