Data Handling Exercise 3.1 1). Find the range of heights of any ten students of your class. The heights of any ten students of the class are 134, 132, 132, 135, 124, 130, 128, 141, 125, 137. Highest height = 141 Lowest height = 124 Range = highest height – lowest height […]
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Fractions and Decimals Exercise 2.2 1). Which of the drawings (a) to (d) show: (i) 2 X 1/5 (ii) 2 X ½ (iii) 3 X 1/3 (iv) 3 X ¼ Answers: 2). Some pictures (a) to (c) are given below. Tell which of them show (i) 3 X 1/5 = 3/5 (ii) 2 X 1/3
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Fractions and Decimals Exercise 2.1 1). Solve: i). 2 – 3/5 ii). 4 + 7/8 iii). 3/5 + 2/7 iv). 9/11 – 4/15 v). 7/10 + 2/5 + 3/2 vi). 22/3 + 3 1/2 vii). 81/2 – 3 5/8 2). Arrange the following in descending order. i). 2/9, 2/3, 8/21 ii). 1/5, 3/7,
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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
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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) ×
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Integers Exercise 1.1 (*) 1). Write down a pair of integers whose: (a) sum is –7 (b) difference is –10 (c) sum is 0 Answer: (a) sum is –7 3 + (-10) (b) difference is –10 (-17) – (-7) (c) sum is 0 5 + (-5) 2). (a) Write a pair of negative integers
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