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

Cube of any odd number is even.

A perfect cube does not end with two zeroes.

If square of a number ends with 5, then its cube ends with 25.

There is no perfect cube which ends with 8.

The cube of a two-digit number may be a three-digit number.

The cube of a two-digit number may have seven or more digits.

The cube of a single-digit number may be a single-digit number.

Find the ratio of the speed of a cycle 15 km per hour to the speed of scooter 30 km per hour.

Find the ratio of 5 m to 10 km.

Find the ratio of 50 paise to Rs 5.

Convert the following ratio to a percentage.

3 : 4

Convert the following ratio to a percentage.

2 : 3

72% of 25 students are interested in mathematics. How many are not interested in mathematics?

A football team won 10 matches out of the total number of matches they played. If their win percentage was 40, then how many matches did they play in all?

If Chameli had Rs 600 left after spending 75% of her money, how much did she have in the beginning?

If 60% people in city like cricket, 30% like football, and the remaining like other games, then what percentage of the people like other games? If the total number of people is 50 lakh, find the exact number who like each type of game.

A square and a rectangular field with measurements as given in the figure have the same perimeter. Which field has a larger area?

Mrs. Kaushik has a square plot with the measurement as shown in the following figure. She wants to construct a house in the middle of the plot. A garden is developed around the house. Find the total cost of developing a garden around the house at the rate of Rs 55 per m².

The shape of a garden is rectangular in the middle and semi circular at the ends as shown in the diagram. Find the area and the perimeter of the garden [Length of rectangle is 20 − (3.5 + 3.5) metres]

A flooring tile has the shape of a parallelogram whose base is 24 cm and the corresponding height is 10 cm. How many such tiles are required to cover a floor of area 1080 m²? (If required you can split the tiles in whatever way you want to fill up the corners).