How to find one quarter of a number. eg one quarter of 12 (1/4)
To find one quarter (1/4) of a number all you need to do is divide your number by 4. However, a quicker way to find one quarter is to half your number and then half if again. Method 1: Divide by 4 Method 2: Half the number and half again. Let’s take a
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Decimal dividing help. How to divide by a decimal.
by catman3000 | in Education > General
Learn how to divide a decimal by a decimal, or a whole number by a decimal.
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How to find the area and perimeter of a rectangle.
by catman3000 | in Education > General
Learn how to find the area and perimeter of a rectangle. Lots of examples to go through.
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Derivative of lnx. How to differentiate natural log (ln)
by catman3000 | in Education > General
Learn how to differentiate lnx. Lots of worked examples.
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How to convert miles to kilometres. (1 mile = 1.6 km)
by catman3000 | in Education > General
Learn how to change miles to kilometres and vice versa. Example include changing 7 miles to kilometres, and finding the distance between New York City and London in miles and kilometres.
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Grid multiplication method.How to do grid (box) multiplying.
by catman3000 | in Education > General
Learn how to do grid multiplication. Examples include multiplying 37 by 4 and 417 by 5.
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Using Pi (3.14) to find the area of a semicircle. (semi circles)
by catman3000 | in Education > General
Learn how to find the area of a semicircle. Examples include the area of a semicircles of radius 8cm and diameter 26m.
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Using Pi (3.14) to find the area of circles.
by catman3000 | in Education > General
Learn how to find the area of a circle. Examples include finding the area of a circle of radius 7cm and diameter of 58m.
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Standard deviation from a frequency table.
by catman3000 | in Education > General
Learn how to dind the standard deviation from a frequency table.
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LCM. How to find the lowest common multiple (LCM of 6 and 8).
by catman3000 | in Education > General
Learn how to find the lowest common multiple of a pair of numbers.
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lucia on How to write small numbers in standard index form (numbers between 0 and 1) on November 11, 2009
Thanks for this article...






