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Mental Maths Workbook - Multiplication by 2 technique


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Multiplication by 2 is simple. But before we show you how to multiply by 2, let us first try and understand what we mean by multiplication.

Suppose the teacher asked us to solve 5 + 5 + 5. Essentially, we need to add 5 to itself 3 times. In math, we write this like:


Note that in the above example, 5 is called the multiplicand and 3 is called the multiplier.

Let us say you want to multiply:


An easy way to think of the problem is to add the number to itself, like this:


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