Lines and Angles Exercise 5.2 1). State the property that is used in each of the following statements? (i) If a || b, then ∠1 = ∠5. (ii) If ∠4 = ∠6, then a || b. (iii) If ∠4 + ∠5 = 180°, then a || b. Answer: (i) If a || b, then ∠1 = …
NCERT Solutions Class 7 Maths Chapter 5 Lines and Angles Exercise 5.2 Read More »
Lines and Angles Exercise 5.1 1). Find the complement of each of the following angles: i) 200 ii). 630 iii). 570 Solution: i) 200 let the complementary of 200 be x. x + 20 = 90 x = 90 – 20 x = 70 ii). 630 let the complementary of 630 be x. x …
NCERT Solutions Class 7 Maths Chapter 5 Lines and Angles Exercise 5.1 Read More »
Simple Equations Exercise 4.4 1). Set up equations and solve them to find the unknown numbers in the following cases: (a) Add 4 to eight times a number; you get 60. Let the given number be x By the given condition of the problem 8x + 4 = 60 Transposing 4 to RHS 8x …
NCERT Solutions Class 7 Maths Chapter 4 Simple Equations Exercise 4.4 Read More »
Simple Equations Exercise 4.2 1). Give first the step you will use to separate the variable and then solve the equation: (a) x – 1 = 0 (b) x + 1 = 0 (c) x – 1 = 5 (d) x + 6 = 2 (e) y – 4 = – 7 …
NCERT Solutions Class 7 Maths Chapter 4 Simple Equations Exercise 4.2 Read More »
Integers Exercise 1.3 Questions with (*) sign are open-ended questions. 1). Evaluate each of the following: (a) (–30) ÷ 10 (b) 50 ÷ (–5) (c) (–36) ÷ (–9) (d) (– 49) ÷ (49) (e) 13 ÷ [(–2) + 1] (f) 0 ÷ (–12) (g) (–31) ÷ [(–30) + (–1)] (h) [(–36) ÷ 12] ÷ 3 …
NCERT Solutions Class 7 Maths Chapter 1 Integers Exercise 1.3 Read More »
Integers Exercise 1.2 Questions with (*) sign are open-ended questions. Exercise 1.3 1). Find each of the following products: (a) 3 × (–1) 3 × (–1) = -3 (b) (–1) × 225 (–1) × 225 = -225 (c) (–21) × (–30) (–21) × (–30) = 630 (d) (–316) × (–1) (–316) × …
NCERT Solutions Class 7 Maths Chapter 1 Integers Exercise 1.2 Read More »
