Secondary School (English Medium) (5 to 8) Class 8 - CBSE Question Bank Solutions for Mathematics

Find the square of the given number.

71

Find the square of the given number.

46

Write a Pythagorean triplet whose one member is 6.

Write a Pythagorean triplet whose one member is 14.

Write a Pythagorean triplet whose one member is 16.

Write a Pythagorean triplet whose one member is 18.

Find the cube root of the following number by the prime factorisation method.

64

Find the cube root of the following number by the prime factorisation method.

512

Find the cube root of the following number by the prime factorisation method.

10648

Find the cube root of the following numbers by the prime factorisation method.

27000

Find the cube root of the following number by the prime factorisation method.

15625

Find the cube root of the following number by the prime factorisation method.

13824

Find the cube root of the following number by the prime factorisation method.

110592

Find the cube root of the following number by the prime factorisation method.

46656

Find the cube root of the following number by the prime factorisation method.

175616

Find the cube root of the following number by the prime factorisation method.

91125

You are told that 1331 is a perfect cube. Can you guess without factorization what is its cube root? Similarly, guess the cube roots of 4913, 12167, 32768

During a sale, a shop offered a discount of 10% on the marked prices of all the items. What would a customer have to pay for a pair of jeans marked at Rs 1450 and two shirts marked at Rs 850 each?

Look at the given map of a city.

Answer the following.

(a) Colour the map as follows: Blue − water plant, red − fire station, orange − library, yellow − schools, green − park, pink − college, purple − hospital, brown − cemetery.

(b) Mark a green ‘X’ at the intersection of Road ‘C’ and Nehru Road, Green ‘Y’ at the intersection of Gandhi Road and Road A.

(c) In red, draw a short street route from library to the bus depot.

(d) Which is further east, the city park or the market?

(e) Which is further south, the Primary School or the Sr. Secondary School?

Verify associativity of addition of rational numbers i.e., (x + y) + z = x + (y + z), when: