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

Divide 293 by 10,00,000 and express the result in standard form.

Write 39,00,00,000 in the standard form.

Write 0.000005678 in the standard form.

Express the product of 3.2 × 10⁶ and 4.1 × 10^–1 in the standard form.

Express `(1.5 xx 10^6)/(2.5 xx 10^-4)` in the standard form.

Some migratory birds travel as much as 15,000 km to escape the extreme climatic conditions at home. Write the distance in metres using scientific notation.

Pluto is 59,1,30,00,000 m from the sun. Express this in the standard form.

Special balances can weigh something as 0.00000001 gram. Express this number in the standard form.

A sugar factory has annual sales of 3 billion 720 million kilograms of sugar. Express this number in the standard form.

The number of red blood cells per cubic millimetre of blood is approximately 5.5 million. If the average body contains 5 litres of blood, what is the total number of red cells in the body? Write the standard form. (1 litre = 1,00,000 mm³)

Express the following in standard form:

The mass of a proton in gram is `1673/1000000000000000000000000000`

Express the following in standard form:

A Helium atom has a diameter of 0.000000022 cm.

Express the following in standard form:

Mass of a molecule of hydrogen gas is about 0.00000000000000000000334 tons.

Express the following in standard form:

Human body has 1 trillon of cells which vary in shapes and sizes.

Express the following in standard form:

Express 56 km in m.

Express the following in standard form:

Express 5 tons in g.

Express the following in standard form:

Express 2 years in seconds.

Express the following in standard form:

Express 5 hectares in cm² (1 hectare = 10000 m²)

The planet Uranus is approximately 2,896,819,200,000 metres away from the Sun. What is this distance in standard form?

An inch is approximately equal to 0.02543 metres. Write this distance in standard form.