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Squaring
Tricks
Easy ways for squaring a big number.
Division Tricks
How can you find out whether a given large number is divisible by another
number without remainder?
Magic Numbers
Some methods of repeating numbers. This will be interesting for you.
Multiplication
Tricks
Easy methods to multiply two given numbers.
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Magic
Numbers
The
way of repeating numbers
Pick a three digit number.
Multiply it by 7. Again multiply it by 143.
Your original number have repeated two times.
Example 1
673 x 7 = 4711
4711 x 143 = 673673
Actually, you have multiply
your original number by 1001 (7 x 143 = 1001).
Multiply your original number by 1001001. The number will repeat three
times.
If you want to repeat your number four times you have to multiply it by
1001001001.
If you get a two digit number
for this trick multiply it by 101 or 10101.
Yes, your number will repeat again.
When it comes to four digit
numbers you should multiply your number by 10001.
Study the method of above numbers.
It's very simple. Now, you can creat your own tricks.
Example 2
Pick a two digit number. Multiply
it by 7.
Multiply the answer by 13. Multiply it again by 111.
(Now, you have multiplied the number by 10101.)
So, the original number have repeated three times.
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