Catswatch

Multiplication is become easy! Most of my students are not agreeing. I like to give you some wonderful tips and you see it will give an amazing result. Try for it….
Suppose I ask you to multiply 99992 with 99923. I know you hesitate and if some try then show me their ugly face that it is very time consuming. I say no. Let us discuss the trick behind it.
1, 00,000 is greater than both 99992 and 99923.
Subtract 99992 and 99923 from 1, 00,000. What you get? It is 8 and 77 respectively.
Now 8 is the smallest one between 8 and 77. Right.
Multiply 8 and 77. You will get 616 is a three digit number. Convert it into five digit number 00696 (as the multiplicand and multiplier are of equivalent digits – this is important REMEMBER).
Subtract 8 from 99923 (BOTH ARE SMALL IN THEIR RESPECTIVE NUMBERS). You get 99915.
Hey…here is my result 99915 00616.
Hello students are you now using calculator. Ok I think you will get the same result.
The above principle is applicable to any number of digits.

Limitations:
1.The number should be very close to its higher 10’s digits. For example 99992 and 99923 are close to 1, 00,000.
2.The multiplication of differences should be converted to equal number of digits as the multiplicand and multiplier.
3.The multiplication results of differences should not more than the multiplicand and multiplier.

Now students use this small trick in your calculations in mathematics.

And cheers.
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