NCERT Solutions Class 8

Class 8 – Mathematics Comparing Quantities – Exercise 8.2 Question: 1. A man got 10% increase in his salary. If his new salary is Rs.1,54,000, find his original salary. Answer : Let original salary be Rs.100. Therefore New salary i.e.,…

Class 8 – Mathematics Comparing Quantities – Exercise 8.3 Question: 1. Calculate the amount and compound interest on: (a) Rs.10,800 for 3 years at 121⁄2% per annum compounded annually. (b) Rs.18,000 for 21⁄2 years at 10% per annum compounded annually.…

Class 8 – Mathematics Comparing Quantities – Exercise 8.1 Question: 1. Find the ratio of the following: (a) Speed of a cycle 15 km per hour to the speed of scooter 30 km per hour. (b) 50 m to 10…

Class 8 – Mathematics Cubes and Cube Roots – Exercise 7.2 Question :1. Find the cube root of each of the following numbers by prime factorization method: (i) 64 (ii) 512 (iii) 10648 (iv) 27000 (v) 15625 (vi) 13824 (vii)…

Class 8 – Mathematics Cubes and Cube Roots – Exercise 7.1 Question :1. Which of the following numbers are not perfect cubes: (i)216 (ii)128 (iii)1000 (iv)100 (v)46656 Answer : (i)216 Prime factors of 216 = 2 x 2 x 2…

Class 8 – Mathematics Squares and Square Roots – Exercise 6.4 Question: 1. Find the square roots of each of the following numbers by Division method: (i) 2304 (ii) 4489 (iii) 3481 (iv) 529 (v) 3249 (vi) 1369 (vii) 5776…

Class 8 – Mathematics Squares and Square Roots – Exercise 6.3 Question: 1. What could be the possible ‘one’s’ digits of the square root of each of the following numbers: (i) 9801 (ii) 99856 (iii) 998001 (iv) 657666025 Answer :…

Class 8 – Mathematics Squares and Square Roots – Exercise 6.2 Question:1. Find the squares of the following numbers: (i) 32 (ii) 35 (iii) 86 (iv) 93 (v) 71 (vi) 46 Answer : Question: 2. Write a Pythagoras triplet whose…

Class 8 – Mathematics Squares and Square Roots – Exercise 6.1 Question:1. What will be the unit digit of the squares of the following numbers: (i) 81 (ii) 272 (iii) 799 (iv) 3853 (v) 1234 (vi) 26387 (vii) 52698 (viii)…

Class 8 – Mathematics Data Handling – Exercise 5.3 Question: 1. List the outcomes you can see in these experiments. (a) Spinning a wheel (b) Tossing two coins together Answer : (a) There are four letters A, B, C and…

Class 8 – Mathematics Data Handling – Exercise 5.2 Question: 1. A survey was made to find the type of music that a certain group of young people liked in a city. Adjoining pie chart shows the findings of this…

Class 8 – Mathematics Data Handling – Exercise 5.1 Question: 1. For which of these would you use a histogram to show the data: (a) The number of letters for different areas in a postman’s bag. (b) The height of…