Maths Tips and Tricks - 01/05/2011
Here you can find some very interesting maths tips and tricks. Please visit here regularly to find new maths tips and tricks.
Maths tip and trick - Multiplication by 4
Multiply by 4
2 X 2 = 4
Therefore, we can multiply any number by 4 by doubling in and then again doubling the answer.
Suppose, a X 4 = ?
2a => 2(2a)
let it be 35 X 4 = ?
Doubling 35 = 70
Again Doubling 70 = 140.
Hence 35 X 4 = 140.
Now try
(a) 42 X 4
(b) 125 X 4
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gud the tricks are awesum!!!!!!!!!!!!!!!!!!!!!!!!
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