Learn The Fastest &
Easiest Way To Perform
Math In Your Head
Adding, subtracting, multiplication, squaring & division can all be done very quickly in your head if you know
the tricks to it. Here are some helpful tips for doing basic mental math:
Multiplying by 5 & by 9 The Fastest Way.
To quickly multiply
by 5, divide the number being
multiplied by 5 in two
and then multiply it by 10.
For example, let's
solve for 12 x 5. Take 12 and divide into two so it becomes 6. Next, take 6 and multiply by 10.
The product is 60.
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