Ex 13.3, 4 - Chapter 13 Class 7 Exponents and Powers - Part 6

Advertisement

  1. Chapter 13 Class 7 Exponents and Powers
  2. Serial order wise

Transcript

Ex 13.3, 4 Express the number appearing in the following statements in standard form. (f) The universe is estimated to be about 12,000,000,000 years old. 12,000,000,000 = 12 × 〖10〗^9 = (1.2 × 10) × 〖10〗^9 = 1.2 × 〖10〗^1 × 〖10〗^9 = 1.2 × 〖10〗^(1 + 9) = 1.2 × 〖10〗^10 Answer is 1.2 × 〖𝟏𝟎〗^𝟏𝟎 years (Using am × an = am + n)

About the Author

Davneet Singh's photo - Teacher, Engineer, Marketer
Davneet Singh
Davneet Singh is a graduate from Indian Institute of Technology, Kanpur. He has been teaching from the past 10 years. He provides courses for Maths and Science at Teachoo.