An Ingenious Hiding Technique

  A friend emailed me this amusing video earlier: It’s a “tutorial” on how to escape police using a duct tube. The premise may sound silly, but the execution of the trick is clever.

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Multiply by 5 In Your Head

Multiplying by 5 mentally is easy since you just divide the number to be multiplied by 2 and multiply the result by 10, (also very simple, by just adding 1 zero to the number or if the number has a .5, just move one decimal place to the right). Examples: 34 × 5 Thought Process:

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Quickly Determine Which Fraction Is Greater

Which is greater? or  Most people would approach this question by converting the fractions into decimals or putting both the fractions to a common denominator. While there’s nothing wrong with those methods, there’s a simpler and more elegant way of solving this problem.

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Mental Subtraction: Calculate Change In Your Head

To be able to accurately determine the amount of change is a highly practical skill to have. When you buy something from a grocery store, dine in a restaurant or doing any transaction that involves cash, you would most likely receive changes. However, many people find calculating change without using a calculator very challenging. The […]

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