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2. Mental calculation - Wikipedia

   en.wikipedia.org/wiki/Mental_calculation

   Physical exertion of the proper level can lead to an increase in performance of a mental task, like doing mental calculations, performed afterward. [4] It has been shown that during high levels of physical activity there is a negative effect on mental task performance. [ 5 ]

3. Ages of Three Children puzzle - Wikipedia

   en.wikipedia.org/wiki/Ages_of_Three_Children_puzzle

   However, with closer examination and persistence by the solver, the question reveals its hidden mathematical clues, especially when the solver lists down all the possible outcomes. This puzzle illustrates the importance of close inspection while approaching a problem in number theory, while enforcing mathematical thinking and rigor, which is a ...

4. Mental abacus - Wikipedia

   en.wikipedia.org/wiki/Mental_abacus

   Mental calculation is said to improve mental capability, increases speed of response, memory power, and concentration power. Many veteran and prolific abacus users in China, Japan, South Korea, and others who use the abacus daily, naturally tend to not use the abacus any more, but perform calculations by visualizing the abacus.

5. Elementary mathematics - Wikipedia

   en.wikipedia.org/wiki/Elementary_mathematics

   Elementary mathematics, also known as primary or secondary school mathematics, is the study of mathematics topics that are commonly taught at the primary or secondary school levels around the world. It includes a wide range of mathematical concepts and skills, including number sense , algebra , geometry , measurement , and data analysis .

6. Common Entrance Examination - Wikipedia

   en.wikipedia.org/wiki/Common_Entrance_Examination

   At 11+, Common Entrance consists of two English examinations, as well as an examination each in Mathematics and Science. [3]At 13+, Common Entrance consists of examinations in Mathematics (three papers: a (listening) mental mathematics paper, plus written non-calculator and calculator); English (two papers); and one paper each in Latin, Classical Greek, Geography, History, Religious Studies ...

7. Trump Won the Election: How His Tax Plan Could Affect the ...

   www.aol.com/trump-won-election-tax-plan...

   Donald Trump's election win signals changes in tax policies that could shape the financial future for middle-class Americans. While President-elect Trump promised to lower taxes for most Americans ...

8. Severe weather across the country could hamper holiday travel ...

   www.aol.com/severe-weather-across-country-could...

   A precipitation forecast from the Weather Prediction Center shows heavy rain and snow is expected across the Northwest as well as several south-central and southeastern states on Friday, Dec. 27 ...

9. Mental calculator - Wikipedia

   en.wikipedia.org/wiki/Mental_calculator

   A mental calculator or human calculator is a person with a prodigious ability in some area of mental calculation (such as adding, subtracting, multiplying or dividing large numbers). In 2005, a group of researchers led by Michael W. O'Boyle, an American psychologist previously working in Australia and now at Texas Tech University , has used MRI ...