Maths Chapter 10: Exponents and Powers

Mass of earth is 5,970,000,000,000,000,000,000,000 kg. We have already learnt in earlier class how to write such large numbers more conveniently using exponents, as, 5.97 × 10²⁴ kg.

We read 10²⁴ as 10 raised to the power 24. We know 2⁵ = 2 × 2 × 2 × 2 × 2 and 2^m = 2 × 2 × 2 × 2 × ... × 2 × 2 ... (m times)

Very small numbers can be expressed in standard form using negative exponents.