Chapter 16 Playing with Numbers Very Short Answer Type Question 1. Write the following numbers in generalised form. (a) ab (b) 85 (c) 132 (d) 1000 Solution: (a) ab =…

Chapter 16 Playing with Numbers Exercise 16.2 Question 1. If 21y5 is a multiple of 9, where y is a digit, what is the value of y? Solution: A number…

Chapter 16 Playing with Numbers Exercise 16.1 Find the values of the letters in each of the following and give reasons for the steps involved. Question 1. Solution: Question 2.…

Chapter 15 Introduction to Graphs Question 1. Write the coordinates of each point shown is the graph. Solution: Question 2. From the given figure, choose the letters indicate the location…

Chapter 15 Introduction to Graphs Exercise 15.3 Question 1. Draw the graphs for the following tables of values, with suitable scales on the axes. (a) Cost of apples (b) Distance…

Chapter 15 Introduction to Graphs Exercise 15.2 Question 1. Plot the following points on a graph sheet. Verify if they lie on a line. (a) A (4, 0), B(4, 2),…

Chapter 15 Introduction to Graphs Exercise 15.1 Question 1. The following graph shows the temperature of a patient in a hospital, recorded every hour. (a) What was the patient’s temperature…

Chapter 14 Factorisation Very Short Answer Type Question 1. Find the common factors of the following terms. (a) 25x2y, 30xy2 (b) 63m3n, 54mn4 Solution: (a) 25x2y, 30xy2 25x2y = 5…

Chapter 14 Factorisation Exercise 14.3 Question 1. Carry out the following divisions. (i) 28x4 ÷ 56x (ii) -36y3 ÷ 9y2 (iii) 66pq2r3 ÷ 11qr2 (iv) 34x3y3z3 ÷ 51xy2z3 (v) 12a8b8 ÷ (-6a6b4) Solution: Question 2.…

Chapter 14 Factorisation Exercise 14.2 Question 1. Factorise the following expressions. (i) a2 + 8a +16 (ii) p2 – 10p + 25 (iii) 25m2 + 30m + 9 (iv) 49y2 + 84yz + 36z2…