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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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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