![]() ![]() Multiplication of 37 by the 3, 6, 9 until 27 series of numbers -> the "triple effect" Multiplication by 11 if sum of digits is greater than 10īecause the middle term is greater than 10, use 5 thenĪdd 1 to the first term 8, which leads to the answer of Multiplication by 11 if sum of digits is less than 10 Multiplication by 25 -> divide by 4 then multiply by 100 Multiplication by 25 -> use the analogy $1 = 4 x 25 cents Multiplication by 500 -> take the half(0.5) then multiply by 1000 Multiplication by 100 -> move the decimal point two places to the right Multiplication by 50 -> take the half(0.5) then multiply by 100 Multiplication by 10 -> just move the decimal point one place to the right Multiplication by 5 -> take the half(0.5) then multiply by 10 This can be useful in applications such as IQ tests, aptitude tests, job application tests, military tests, college entrance tests and so many more uses in the office, workplace, or in your own home. Knowing these shortcuts are key to computation speed and accuracy in your Mental Mathematical Aptitude. There are many useful Math techniques, tricks, and secrets that can be valuable in your day to day work or study. ![]() ![]() Knowing these can help you figure out answers to most of life's daily activities involving numbers. These are some of the practical secrets in mental math calculation speed. ![]()
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