What is a Square Root
Maths Questions Answers
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Written by: Sanjay Srivastava
B.Tech (Honours);IIT Kharagpur
PMP ; PMI USA
Class - VIII - Maths:- INDEX
1. Squares & Square Roots2. Cubes & Cube Roots
3. Exponents & Radicals
4. Profit Loss & Discount
5. Compound Interest
6. Algebraic Identities
7. Polynomials
8. Linear Equations
9. Parallel Lines
10. Types of Quadrilaterals
11. Construction of Quadrilaterals
12. Circles
13. Areas
14. Surface Areas
15. Volumes
16. Statistics
Class - VIII - Maths
What is a Square Root (Page 2/10)
(Continued from page )Important Tips - Square Roots (1) The perfect square is never negative.
(2) There are basic two methods to find square roots
(i) by Prime Factors (ii) by Long Division Method
(3) If 'N' & 'M' are perfect square number then
(4) A number ending with 2,3,7 & 8 is never a perfect square.
(5) The square root of a number which is less than 0 is always greater than the number
Question - Type 1 - Which are perfect square - 7, 25, 32, 64
Answer - 1-
Make the factors -
7 = 1* 7 ;
25=5*5= 52 ;
32=2*4*4=2*42 ;
64= 8*8= 82
Perfect square - The number where you are able to make the pairs of factor as in case on 25 & 64. therefore on 25 i.e 5*5 & 64 i.e. 8*8 are perfect square.
(Cont..... to page 3 )
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