Square Roots:
The square of a number is that number multiplied by itself.
The square of 12 is 144.
The square root of a number is that number whose square is equal to the given number.
The square root of 4 is 2.
0, 1, 4, and 9 are the squares of whole numbers, and they are called perfect squares.
Q.1. Finding Square Root using Prime Factorisation
Find 324 by using prime factorisation.
324 = 2 x 2 x 3 x 3 x 3 x 3
= ( 2 x 3 x 3 ) x ( 2 x 3 x 3)
= ( 2 x 3 x 3) 2
= 18
When estimating square roots of numbers, you need to determine.
Between which two perfect squares it lies (and therefore which 2 square roots).
Which perfect square it is closer to (and therefore which square root).
