Saving time in calculation is great help to any body. Aprt from the increase in self confidence , it also provides more time for other time consuming calculations which are required for tough maths problems. Every exam today require you not only to solve , but to solve very fast.
So here is a trick for computing the multiplication by 15[viral-lock]Say you want to multiply 59 x 15 = ::
Step 1 : Just put one zero (0) after the number which is to be multiplied by 15= e.g 590
Step 2: Halve the number in step 1 e.g 590/2 = 295
Step 3: Add Step 1 result with Step 2 = 590 + 295= 885
More example are given in image below
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