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Magical Calculation  Finding Square of Number
The following are the easy methods for finding the squares of two digit numbers :
This method describes how to find square of any two digit number which ends with 5
65² = 65 × 65
But you need not multiply 65 by 65 to get 65² . Use the following easy method to find the square of any two digit number ending with 5.5 is the unit digit and 6 is the ten digit in the given number 65.
To find 65² :
Add 1 to 6 that gives you 6 + 1 = 7.
Multipy 6 by 7 : 6 × 7 = 42.
Put 25 by the right side of 42 to give 4225 therefore 65² = 4225.
To find 85² :
Multipy 8 by its next number 9. ie. 8 × 9 = 72
Put 25 by the side of 72 to give 7225 therefor 85² = 7225
It may be regarded as follows .
65² = (6 × 7) 100 + 25 = 4225
85² = (8 × 9) 10 0+ 25 = 7225
It may also be regarded as follows,
65² = (6² + 6) 100 + 25 = 4225
85² = (8² + 8) 100 + 25 = 7225
No steps need be shown.Only the correct answer is to be given.
Next week we will see how to find square of any given two digit number..so keep in touch


