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

Express the given numbers in standard form.

6020000000000000

Express the given numbers in standard form.

0.00000000837

Express the given numbers in standard form.

31860000000

Express the given numbers in usual form.

3.02 × 10^-6

Express the given numbers in usual form.

4.5 × 10⁴

Express the given numbers in usual form.

3 × 10⁻⁸

Express the given numbers in usual form.

1.0001 × 10⁹

Express the given numbers in usual form.

5.8 × 10¹²

Express the given numbers in usual form.

3.61492 × 10⁶

Express the number appearing in the given statement in standard form.

1 micron is equal to `1/1000000` m

Express the number appearing in the given statement in standard form.

Charge of an electron is 0.000, 000, 000, 000, 000, 000, 16 coulomb.

Express the number appearing in the given statement in standard form.

Size of a bacteria is 0.0000005 m

Express the number appearing in the given statement in standard form.

Size of a plant cell is 0.00001275 m

Express the number appearing in the given statement in standard form.

The thickness of a thick paper is 0.07 mm

In a stack, there are 5 books each of thickness 20 mm and 5 paper sheets each of thickness 0.016 mm. What is the total thickness of the stack?

Can a polyhedron have for its faces 3 triangles?

Can a polyhedron have for its faces 4 triangles?

Can a polyhedron have for its faces a square and four triangles?

Is it possible to have a polyhedron with any given number of faces? (Hint: Think of a pyramid).

The given Figure are prisms or not?