Catswatch

Duplex of a number is another tool which reduces the arithmetical calculations in finding square of a number.

1. Square of 34 :-

Let N = square of 34
Step – 1 –: Taking Tens place digit first,
<< 3 >> = square of 3 =9
Step – 2 –: Taking Unit and Tens place digits,
<< 34 >> = 2 × ( 3 × 4 ) = 24
Step – 3 –: Taking Unit place digits,
<< 4 >> = square of 4 = 16
N = 16 + (24 × 10 )+ (9 × 100) = 1156.

2. Square of 87 :-

Let N = Square of 87
Step – 1 –: Taking Tens place digit first,
<< 8 >> = square of 8 = 64
Step – 2 –: Taking Unit and Tens Place digits,
<< 87 >> = 2 × ( 8 × 7 ) = 112
Step – 3 –: Taking Unit place digit
<< 7 >> = square of 7 = 49
The required square is,
N = 49 + ( 112 × 10 ) + ( 64 × 100) = 7569.
Student practice the squaring process and you may save your time on solving the numericals. Portugues | Francais | Espanol | Deutsche | Italiano | Chinese | Korean | Japanese