Secondary School (English Medium) (5 to 8) इयत्ता ८ - CBSE Question Bank Solutions for Mathematics

Multiply the following: 

(p + 6), (q – 7)

Multiply the following: 

6mn, 0mn

The time period after which the interest is added each time to form a new principal is called the ______.

In the first year on an investment of Rs 6,00,000 the loss is 5% and in the second year the gain is 10%, the net result is ______.

Simple interest on a given amount is always less than or equal to the compound interest on the same amount for the same time period and at the same rate of interest per annum.

Given the principal = Rs 40,000, rate of interest = 8% p.a. compounded annually. Find

1. Interest if period is one year.
2. Principal for 2nd year.
3. Interest for 2nd year.
4. Amount if period is 2 years.

Given the principal = Rs 40,000, rate of interest = 8% p.a. compounded annually. Find principal for 2^nd year.

Given the principal = Rs 40,000, rate of interest = 8% p.a. compounded annually. Find Interest for 2^nd year.

Given the principal = Rs 40,000, rate of interest = 8% p.a. compounded annually. Find amount if period is 2 years.

A cube of side 5 cm is painted on all its faces. If it is sliced into 1 cubic centimetre cubes, how many 1 cubic centimetre cubes will have exactly one of their faces painted?

A cube of side 4 cm is cut into 1 cm cubes. What is the ratio of the surface areas of the original cubes and cut-out cubes?

The volume of a cube is 64 cm³. Its surface area is ______.

The areas of any two faces of a cube are equal.

A cube of side 3 cm painted on all its faces, when sliced into 1 cubic centimetre cubes, will have exactly 1 cube with none of its faces painted.

The surface area of a cube formed by cutting a cuboid of dimensions 2 × 1 × 1 in 2 equal parts is 2 sq. units.

A cube of side 5 cm is cut into as many 1 cm cubes as possible. What is the ratio of the surface area of the original cube to that of the sum of the surface areas of the smaller cubes?

A river 2 m deep and 45 m wide is flowing at the rate of 3 km per hour. Find the amount of water in cubic metres that runs into the sea per minute.

If abc is a three digit number, then the number abc – a – b – c is divisible by ______.

Which of the following numbers is divisible by 99?

3 × 5 is divisible by 9 if the digit x is ______.