Class 8 Linear Equations in One Variable
Ex 2.1 Solve the following equations: 1. x – 2 = 7 2. y + 3 = 10 3. 6 = z + 2 4. 3/7 + x = 17/7 5. 6x = 12 6. t/5 = 10 7. 2x/3 = 18 8. 1.6 = y / 1.5 9. 7x…
Class 8 Understanding Quadrilaterals
Ex 3.1 1. Given here are some figures. Classify each of them on the basis of the following. (a) Simple curve (b) Simple closed curve (c) Polygon (d) Convex polygon (e) Concave polygon2. What is a regular polygon?State the name of a regular polygon of(i) 3 sides (ii) 4 sides…
Class 8 Practical Geometry
Chapter 4: Practical Geometry Ex 4.1 1. Construct the following quadrilaterals. (i) Quadrilateral ABCD. AB = 4.5 cm, BC = 5.5 cm, CD = 4 cm, AD = 6 cm, AC = 7cm (ii) Quadrilateral JUMP JU = 3.5 cm, UM = 4 cm, MP = 5 cm , PJ…
Class 8 Data Handling
Ex 5.1 Data Handling 1. For which of these would you use a histogram to show the data? (a) The number of letters for different areas in a postman’s bag. (b) The height of competitors in an athletics meet. (c) The number of cassettes produced by 5 companies. (d) The…
Class 8 Squares and Square Root
Chapter 6: Squares and Square Roots Ex 6.1 1. 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) 55555 2. 2. The following numbers are obviously not…
Class 8 Cubes and Cube Root
Chapter 7: Cubes and Cube Roots Ex 7.1 1. Which of the following numbers are not perfect cubes? (i) 216 (ii) 128 (iii) 1000 (iv) 100 (v) 46656 2. Find the smallest number by which each of the following numbers must be multiplied to obtain a perfect cube. (i) 243…
Class 8 Comparing Quantities
Chapter 8:Comparing Quantities Ex 8.1 1. Find the ratio of the following. (a) Speed of a…
Class 8 Algebraic Expression and Identities
Chapter 9: Algebraic Expressions and Identities Ex 9.1 1. Identify the terms, their coefficients for each of the following expressions. (i) 5xyz2 – 3zy(ii) 1 + x + x2(iii) 4x2y2 – 4x2y2z2 + z2(iv) 3 – pq + qr – rp(v) + – xy(vi) 0.3a – 0.6ab + 0.5b 2. Classify the following polynomials as monomials,…
Class 8 Mensuration
Chapter 11: Mensuration Ex 11.1 1. A square and a rectangular field with measurements as given in the figure have the same perimeter. Which field has a larger area? 2. Mrs Kaushik has a square plot with the measurement as shown in the figure. She wants to construct a house…
Class 8 Powers and Exponents
Chapter 12: Powers and Exponents Ex 12.1 1. Evaluate i) 3-2 ii) (-4)-2 iii) (1/2) ⁻⁵ 2. Simplify and express the result in power notation with a positive exponent i) (-4)5 ÷ (-4)8 ii) (1/23)2 iii) (-3)4 × (5/3)4 iv) (3-7 ÷ 3-10) × 3-5 v) 2-3 × (-7)-3 3. Find the value of i)…