Chapter 10 Practical Geometry Exercise 10.2
Chapter 10 Practical Geometry Exercise 10.2 Question 1. Construct ∆XYZ in which XY = 4.5 cm, YZ = 5 cm and ZX = 6 cm. Solution: Steps of construction: (i) Draw XY = 4.5 cm. (ii) Draw an arc with centre Y and radius 5 cm. (iii) Draw another arc with centre X and radius […]
Chapter 10 Practical Geometry Exercise 10.1
Chapter 10 Practical Geometry Exercise 10.1 Question 1. Draw a line, say AB, take a point C outside it. Through C draw a line parallel to AB using ruler and compasses only. Solution: Steps of construction: (i) Draw a line AB. (ii) Take any point D on it. (iii) Join the given point C to […]
Chapter 9 Rational Numbers
Chapter 9 Rational Numbers Very Short Answer Type Solution: Solution: Solution: Question 5. Find the sum of Solution: Question 6. Subtract: Solution: Question 7. Find the product: Solution: Short Answer Type Solution: Let the required rational number be x. Question 9. Arrange the following rational numbers in ascending order. Solution: Question 10. Insert five rational […]
Chapter 9 Rational Numbers Exercise 9.2
Chapter 9 Rational Numbers Exercise 9.2 Question 1. Find the sum: Solution. Question 2. Find: Solution: Question 3. Find the product: Solution: Question 4. Find the value of: Solution:
Chapter 9 Rational Numbers Exercise 9.1
Chapter 9 Rational Numbers Exercise 9.1 Question 1. List five rational numbers between: (i) -1 and 0 (ii) -2 and -1 Solution: (i) -1 and 0 Converting each of rational numbers as a denominator 5 + 1 = 6, we have (ii) -2 and -1 Converting each of rational numbers as a denominator 5 + […]
Chapter 8 Comparing Quantities
Chapter 8 Comparing Quantities Very Short Answer Type Question 1. Find the ratio of: (a) 5 km to 400 m (b) 2 hours to 160 minutes Solution: (a) 5 km = 5 × 1000 = 5000 m Ratio of 5 km to 400 m = 5000 m : 400 m = 25 : 2 Required […]
Chapter 8 Comparing Quantities Exercise 8.3
Chapter 8 Comparing Quantities Exercise 8.3 Question 1. Tell what is the profit or loss in the following transactions. Also find profit per cent or loss per cent in each case. (a) Gardening shears bought for ₹ 250 and sold for ₹ 325. (b) A refrigerator bought for ₹ 12,000 and sold at ₹ 13,500. […]
Chapter 8 Comparing Quantities Exercise 8.2
Chapter 8 Comparing Quantities Exercise 8.2 Question 1. Convert the given fractional numbers to per cents: Solution: Question 2. Convert the given decimal fractions to per cents: (а) 0.65 (b) 2.1 (c) 0.02 (d) 12.35 Solution: Question 4. Find: (a) 15% of 250 (b) 1% of 1 hour (c) 20% of ₹ 2500 (d) 75% […]
Chapter 8 Comparing Quantities Exercise 8.1
Chapter 8 Comparing Quantities Exercise 8.1 Question 1. Find the ratio of: (a) ₹ 5 to 50 paise (b) 15 kg to 210 g (c) 9 m to 27 cm (d) 30 days to 36 hours Solution: (a) ₹ 5 to 50 paise Converting the given quantities into same units, we have ₹ 5 = […]
Chapter 7 Congruence of Triangles
Chapter 7 Congruence of Triangles Very Short Answer Type Question 1. In the given figure, name (a) the side opposite to vertex A (b) the vertex opposite A to side AB (c) the angle opposite to side AC (d) the angle made by the sides CB and CA. Solution: (a) The side opposite to vertex […]