How Do You Calculate Mentally? [Solved]
Greetings, iam Helen Leko, Don’t overdo it! 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...