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Order numbers in scientific notation

Year 9 maths · Fieldbook Learning

Name ______________________ Date __________

Compare the powers of 10 first. If they are equal, compare the numbers in front. Write the numbers as 4.7 × 10^3.

  1. Write these numbers from least to greatest: 3.8 × 10³, 1.4 × 10², 7.9 × 10⁵
  2. Write these numbers from least to greatest: 1.5 × 10¹, 6.5 × 10⁷, 5.5 × 10²
  3. Write these numbers from least to greatest: 7.6 × 10³, 3.6 × 10⁴, 4.9 × 10⁴
  4. Write these numbers from least to greatest: 8.7 × 10³, 6.4 × 10², 3.5 × 10⁷
  5. Write these numbers from least to greatest: 3.7 × 10², 3.2 × 10⁷, 4.1 × 10¹, 4.4 × 10⁷
  6. Write these numbers from least to greatest: 5.2 × 10⁴, 3.8 × 10⁹, 4.6 × 10², 2.2 × 10⁸
  7. Write these numbers from least to greatest: 2 × 10⁸, 4.7 × 10³, 5.9 × 10¹, 3.1 × 10⁷
  8. Write these numbers from least to greatest: 3.1 × 10⁸, 2.2 × 10², 2.5 × 10⁶, 3.2 × 10¹
  9. Write these numbers from least to greatest: 7.3 × 10⁴, 6.4 × 10⁸, 6.6 × 10¹⁰, 5.3 × 10⁴
  10. Write these numbers from least to greatest: 2.2 × 10³, 3.8 × 10¹⁰, 4.1 × 10⁴, 6.1 × 10⁷
  11. Write these numbers from least to greatest: 5.7 × 10⁴, 8 × 10⁵, 8.5 × 10¹⁰, 7.1 × 10⁵
  12. Write these numbers from least to greatest: 7.1 × 10¹⁰, 6.9 × 10⁹, 7.8 × 10², 2.6 × 10³
  13. Write these numbers from least to greatest: 8.5 × 10⁷, 4.1 × 10¹², 2.9 × 10², 1 × 10⁸, 4.6 × 10³
  14. Write these numbers from least to greatest: 4.6 × 10³, 7.2 × 10⁵, 3.1 × 10¹¹, 8.1 × 10⁷, 6.8 × 10¹⁰
  15. Write these numbers from least to greatest: 2.9 × 10¹¹, 1.5 × 10⁷, 4.2 × 10⁸, 3.3 × 10¹², 3 × 10⁷
  16. Write these numbers from least to greatest: 7.3 × 10⁵, 7.4 × 10⁴, 3.4 × 10⁸, 6.7 × 10⁷, 8.1 × 10²
  17. Write these numbers from least to greatest: 3.8 × 10⁹, 5.4 × 10¹², 8.7 × 10⁶, 7.1 × 10¹⁵, 8 × 10¹³, 6.3 × 10⁸
  18. Write these numbers from least to greatest: 4.2 × 10⁸, 3.3 × 10⁸, 2.5 × 10⁷, 1.1 × 10⁹, 2.9 × 10⁴, 4.1 × 10¹⁰
  19. Write these numbers from least to greatest: 8 × 10¹, 5.9 × 10¹⁰, 1.4 × 10⁹, 4 × 10¹⁰, 8.1 × 10¹⁵, 4.4 × 10¹²
  20. Write these numbers from least to greatest: 5.3 × 10⁷, 3.3 × 10¹⁰, 2.8 × 10¹⁰, 2 × 10¹, 8.8 × 10¹², 2.1 × 10¹²
More free practice: fieldbooklearning.com/uk/practice/year-9/order-numbers-in-scientific-notation/

Answer key: Order numbers in scientific notation

  1. 1.4 × 10^2, 3.8 × 10^3, 7.9 × 10^5
  2. 1.5 × 10^1, 5.5 × 10^2, 6.5 × 10^7
  3. 7.6 × 10^3, 3.6 × 10^4, 4.9 × 10^4
  4. 6.4 × 10^2, 8.7 × 10^3, 3.5 × 10^7
  5. 4.1 × 10^1, 3.7 × 10^2, 3.2 × 10^7, 4.4 × 10^7
  6. 4.6 × 10^2, 5.2 × 10^4, 2.2 × 10^8, 3.8 × 10^9
  7. 5.9 × 10^1, 4.7 × 10^3, 3.1 × 10^7, 2 × 10^8
  8. 3.2 × 10^1, 2.2 × 10^2, 2.5 × 10^6, 3.1 × 10^8
  9. 5.3 × 10^4, 7.3 × 10^4, 6.4 × 10^8, 6.6 × 10^10
  10. 2.2 × 10^3, 4.1 × 10^4, 6.1 × 10^7, 3.8 × 10^10
  11. 5.7 × 10^4, 7.1 × 10^5, 8 × 10^5, 8.5 × 10^10
  12. 7.8 × 10^2, 2.6 × 10^3, 6.9 × 10^9, 7.1 × 10^10
  13. 2.9 × 10^2, 4.6 × 10^3, 8.5 × 10^7, 1 × 10^8, 4.1 × 10^12
  14. 4.6 × 10^3, 7.2 × 10^5, 8.1 × 10^7, 6.8 × 10^10, 3.1 × 10^11
  15. 1.5 × 10^7, 3 × 10^7, 4.2 × 10^8, 2.9 × 10^11, 3.3 × 10^12
  16. 8.1 × 10^2, 7.4 × 10^4, 7.3 × 10^5, 6.7 × 10^7, 3.4 × 10^8
  17. 8.7 × 10^6, 6.3 × 10^8, 3.8 × 10^9, 5.4 × 10^12, 8 × 10^13, 7.1 × 10^15
  18. 2.9 × 10^4, 2.5 × 10^7, 3.3 × 10^8, 4.2 × 10^8, 1.1 × 10^9, 4.1 × 10^10
  19. 8 × 10^1, 1.4 × 10^9, 4 × 10^10, 5.9 × 10^10, 4.4 × 10^12, 8.1 × 10^15
  20. 2 × 10^1, 5.3 × 10^7, 2.8 × 10^10, 3.3 × 10^10, 2.1 × 10^12, 8.8 × 10^12