Easy Arithmetic Tricks
This is a fairly easy trick that we have taught and used around our house.
To multiply any number between 1 and 9 by 9 hold both hands in front of your face - drop the finger that corresponds to the number you are multiplying (for example 9×3 - drop your third finger) - count the fingers before the dropped finger (in the case of 9×3 it is 2) then count the numbers after (in this case 7) - the answer is 27.
I had no idea there were so many easy tricks like this that can be used to help solve math problems.
Check out 10 Easy Arithmetic Tricks at The List Universe for more quick and easy tricks you can pass on to your kids.
Tags: learning, math, arithmetic, problem solving, teaching
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2 opinions for Easy Arithmetic Tricks
John Nicholson
Dec 10, 2007 at 5:48 pm
Every child in the world needs to recognise each name and number of the fingers left to right across the back of their hands as quickly as possible, perfect counting up to ten at the rate of a sum a second from the fingers and then use my Abacus One. at3 rather then five.
IT IS THE KEY TO THE BRAIN
John Nicholson
Dec 10, 2007 at 5:54 pm
SO YOU CAN TEACH EVERY CHILD
http://www.abacusandalphabet.com/abacus.htm
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