Hi Everybody hope you are visiting to this page regularly now for this week let us listen to Multiply the numbers in more simple ways with mental maths.

Let me start with the Base numbers and complement numbers . The base numbers are denoted as 10, 100, 1000, 10000 etc., and the complement numbers are the difference between the base numbers and the actual numbers for eg., the base number for this digit 4 is 10 and the complement number for this digit is 6 ie., (10 -4 = 6).

Please keep the above said paragraph in your mind always and just follow me.

Let us multiply 8 X 9

The base number for 8 is 10 so (8 – 10 = -2 )

The base number for 9 is 10 so (9-10) = -1)

Now write the number like this

8 -2

9 -1

72

Multiply first (-2 X -1 = 2) this is final number in the answer

Then subtract any one number on diagonal wise (8-1 = 7) or (9-2=7)

Now we got the answer. Ok here is the another example

Let us try 98 X 97 (can u multiply in 6 second ohh yes !!!)

98 -02

97 -03

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98-3 06

answer 9506 check with the calculator now and make sure the answer is correct

## Monday, April 7, 2008

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