Express the number appearing in the following statements in standard form: (a) The distance between Earth and Moon is 384,000,000 m. (b) Speed of light in vacuum is 300,000,000 m/s.

(a) The distance between Earth and Moon = 384,000,000 m
= 384 x 1000000 m
= 3.84 x 100 x 1000000
= 3.84×10⁸ m

(b) Speed of light in vacuum = 300,000,000 m/s
= 3 x 100000000 m/s
= 3 x 10⁸ m/s

Class 7 Maths Chapter 13 Exercise 13.3

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