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Last updated at Sept. 11, 2018 by Teachoo

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Ex 6.3, 2 Without doing any calculation, find the numbers which are surely not perfect squares. (i) 153A number is not a perfect square, if it ends with 2, 3, 7, 8 or if it has odd number of zeroes Since, 153 ends with 3 153 is not a perfect square. Ex 6.3, 2 Without doing any calculation, find the numbers which are surely not perfect squares. (ii) 257A number is not a perfect square, if it ends with 2, 3, 7, 8 or if it has odd number of zeroes Since, 257 ends with 7 257 is not a perfect square. Ex 6.3, 2 Without doing any calculation, find the numbers which are surely not perfect squares. (iii) 408A number is not a perfect square, if it ends with 2, 3, 7, 8 or if it has odd number of zeroes Since, 408 ends with 8 408 is not a perfect square. Ex 6.3, 2 Without doing any calculation, find the numbers which are surely not perfect squares. (iv) 441A number is not a perfect square, if it ends with 2, 3, 7, 8 or if it has odd number of zeroes Since, 441 does not end with 2, 3, 7, 8 It is can be a perfect square.

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.