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How Do You Calculate Mentally? [Solved]
Take a given number, and add and subtract a certain value to it that will make it easier to multiply. For example: 492. Multiply these numbers together to get 242,000 (This can be done efficiently by dividing 484 by 2 = 242 and multiplying by 1000).
How to Calculate Faster than a Calculator - Mental Maths #2| Addition and Subtraction
Hi, This Video is the 2nd part of the
How to Calculate Faster than a Calculator - Mental Maths #1
Hi, This Video is the 1st part of the
How I learned to Calculate Extremely Fast
This week I learned how to
