**How many times have you heard someone say 'I can't do mental arithmetic'?**

Perhaps it is something that you have said yourself many times . . . I know I have!

The problem, I have found, is not 'I can't do mental arithmetic' but 'I don't know how to do mental arithmetic'.

This certainly was the case for me.

Let me show you what i mean.

If I were to ask you to multiply 43 x 11. Would you be able to do it? How long would it take you to do it?

If you asked me that 1 year ago, I would have said 'I can do it but it will take me a while'. You see, like many people, I believed that I couldn't do mental arithmetic.

Now, let me show you how to do 43 x 11 in your head in less than 1 second (it will take you less than 1 second once you know how to do it).

1. separate the 4 and the 3 thus: 4 __ 3 (because we are going to put a number in between the 4 and the 3),

2. add 4 + 3 to get: 4 + 3 = 7,

3. place the 7 between the 4 and the 3 to get: 4 7 3,

That is your answer: 43 x 11 = 473

How easy is that?

Practice on the following and see how quickly you can do them in your mind:

- 23 x 11 = (23 x 11 = 253)

- 18 x 11 = (18 x 11 = 198)

- 71 x 11 = (71 x 11 = 781)

If I were to ask you now, what is 27 x 11? You would be able to work it out in your head in less than 1 second and tell me: 297.

Congratulations! You have gone from 'I can't do mental arithmetic' to 'Gee, that was easy!'.

The thing about mental arithmetic is: the problem is not 'I can't do mental arithmetic' but 'I don't know how to do mental arithmetic'.

There are many such tricks to doing mental arithmetic and once you know them, you will be amazed at the type of mental arithmetic calculations you will be able to do in you head in less than 1 second:

- divide by 5 eg. 42 / 5 = ?

- multiply by 5 eg. 68 x 5 = ?

- square a number that ends in 5 eg. 45 x 45 = ?

- and so on . . .

So, take heart! You are not as 'dumb' as you think. You can't do mental arithmetic simply because you were never shown how to do it . . . and not because you can't!

Serge M Botans

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Serge M Botans is the CEO of the web site

http://www.mental-workout.com and has

taught Maths/Science for 14 years in a High School.

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Thanks Mr. Serge you would not understand how long I have been searching for someone to help me to understand mental arithmetic. I thought that only gifted persons could calculate mentally but you proved me wrong, the examples you ‘ve have given me I am surely going to put into practice so that I can master these techniques. Thank you for empowering me and you really do know your stuff.

I also like your security questions

thank you very much for your kind words and i am very glad that i have been able to empower you to do what you never thought you could … sometimes we only need to be shown how 🙂