When can I use this method?
For squaring any 3-digit numbers.
The number can be either < or > a Base number.
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- When selecting a Base number, prefer a number that is near the number to be squared as well as it should be easy to multiply with (prefer round numbers).
- This method uses the concept (B + a)2 = [(B + a) + a] + a2, where ‘(B + a)’ is the number to be squared, ‘B’ is the Base number and ‘a’ is the difference.
- Whenever the number is more than the Base number, the difference is written as positive (+ve).
- Whenever the number is less than Base Number, the difference is written as negative (-ve).
- This method is a corollary to the Multiplication method NrB3
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