Class 8

Rational numbers are numbers that can be expressed as the ratio or fraction of two integers, where the denominator is not zero. Examples of rational numbers include: […]

Exercise 2.1 Q1: 3x = 2x + 18Ans: 3x = 2x + 18⇒ 3x – 2x = 18⇒ x = 18Putting the value of x in RHS […]

Exercise 3.1  Q1: Given here are some figures.1. 2. 3.4.5. 6.7.8.Classify each of them on the basis of the following(a) Simple curve (b) Simple closed curve (c) Polygon(d) Convex polygon (e) Concave polygonSol: (a) Simple […]

Exercise 3.3Q1: Given a parallelogram ABCD. Complete each statement along with the definition or property used.(i) AD = _____(ii) ∠DCB = _____(iii) OC = _____(iv) m∠DAB […]

Exercise 4.1 Q1:  A survey was made to find the type of music that a certain group of young people liked in a city. Adjoining pie […]

Exercise 5.1 Q1. What will be the unit digit of the squares of the following numbers?(i) 81 (ii) 272(iii) 799(iv) 3853(v) 1234(vi) 26387(vii) 52698(viii) 99880(ix) 12796(x) 55555Ans: (i) Since, […]

Q1: Which of the following numbers are not perfect cubes?(i) 216 (ii) 128 (iii) 1000(iv) 100 (v) 46656 Sol:  Q2: Find the smallest number by which each of the following numbers […]

Exercise 6.2 Q1:  Find the cube root of each of the following numbers by prime factorisation method.  (i)  64 (ii)  512 (iii) 10648 (iv) 27000 (v) […]

Try These Questions (Page No. 81) Q1:In a primary school, the parents were asked about the number of hours they spend per day in helping their […]