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Short - Cut For Squaring Two-Digit Numbers [May Also Be Extended To Three-Digit And Four-Digit Numbers As Well]

Intellect Growth Management

31/05/2017 0 0 View Comments

Square of a two-digit number:

Quick Method:

(82)²= 6404

32 [8*2*2] ==> 8 and 2 from original number itself and another 2 from the power of 82 i.e. 2

6724

Likewise for square of 79:

(79)²= 4981

126 [7*9*2]

6241 ==> Final Answer

Likewise for square of 63:

(63)²

= 3609

+ 36

= 3969 ==>Final Answer

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