# Example 5 - Chapter 6 Class 8 Squares and Square Roots

Last updated at Sept. 21, 2018 by Teachoo

Last updated at Sept. 21, 2018 by Teachoo

Transcript

Example 5 (Chapter 6 Class 8 Square and Square Roots NCERT Book) Is 90 a perfect square? Doing prime factorization of 90 2 | 90 3 | 45 3 | 15 5 | 5 | 1 Thus, 90 = 2 × 3 × 3 × 5 Since 2 & 5 do not occur in pairs ∴ 90 is not a perfect square.

Checking if perfect square by prime factorisation

Chapter 6 Class 8 Squares and Square Roots

Concept wise

- Square numbers
- Properties of square numbers
- Sum of consecutive odd numbers
- Numbers between square numbers
- Pattern Solving
- Finding square of large numbers
- Pythagorean triplets
- Square root
- Finding Square root through repeated subtraction
- Finding Square root through prime factorisation
- Checking if perfect square by prime factorisation
- Smallest number multiplied to get perfect square
- Smallest number divided to get perfect square
- Smallest square number divisible by numbers
- Finding number of digits in square root (without calculation)
- Finding square root by division method - Integers
- Least number subtracted to get a perfect square
- Least number added to get a perfect square
- Finding square root by division method - Decimals
- Statement Questions

About the Author

Davneet Singh

Davneet Singh is a graduate from Indian Institute of Technology, Kanpur. He has been teaching from the past 9 years. He provides courses for Maths and Science at Teachoo.