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Multiply numbers in scientific notation

Grade 8 math · Fieldbook Learning

Name ______________________ Date __________

Multiply or divide the numbers in front, then combine the powers of 10. Make sure the front number is between 1 and 10.

  1. Multiply: (2 × 10⁵) × (4 × 10⁶). Write the answer in scientific notation, like 4.7 × 10^3.
  2. Multiply: (4 × 10⁵) × (6 × 10²). Write the answer in scientific notation, like 4.7 × 10^3.
  3. Multiply: (9 × 10⁴) × (4 × 10⁵). Write the answer in scientific notation, like 4.7 × 10^3.
  4. Multiply: (6 × 10⁶) × (4 × 10²). Write the answer in scientific notation, like 4.7 × 10^3.
  5. Multiply: (8 × 10⁸) × (3 × 10⁸). Write the answer in scientific notation, like 4.7 × 10^3.
  6. Multiply: (8 × 10²) × (8 × 10⁶). Write the answer in scientific notation, like 4.7 × 10^3.
  7. Multiply: (6 × 10⁸) × (8 × 10²). Write the answer in scientific notation, like 4.7 × 10^3.
  8. Multiply: (4 × 10³) × (8 × 10⁴). Write the answer in scientific notation, like 4.7 × 10^3.
  9. Multiply: (5 × 10⁸) × (4 × 10²). Write the answer in scientific notation, like 4.7 × 10^3.
  10. Multiply: (3 × 10²) × (7 × 10⁶). Write the answer in scientific notation, like 4.7 × 10^3.
  11. Multiply: (4 × 10³) × (6 × 10³). Write the answer in scientific notation, like 4.7 × 10^3.
  12. Multiply: (4 × 10⁸) × (7 × 10⁶). Write the answer in scientific notation, like 4.7 × 10^3.
  13. Multiply: (9 × 10³) × (2 × 10¹⁰). Write the answer in scientific notation, like 4.7 × 10^3.
  14. Multiply: (8 × 10⁴) × (5 × 10⁸). Write the answer in scientific notation, like 4.7 × 10^3.
  15. Multiply: (4 × 10³) × (4 × 10¹²). Write the answer in scientific notation, like 4.7 × 10^3.
  16. Multiply: (4 × 10²) × (5 × 10⁶). Write the answer in scientific notation, like 4.7 × 10^3.
  17. Multiply: (7 × 10¹⁰) × (3 × 10⁷). Write the answer in scientific notation, like 4.7 × 10^3.
  18. Multiply: (9 × 10¹²) × (4 × 10²). Write the answer in scientific notation, like 4.7 × 10^3.
  19. Multiply: (8 × 10⁹) × (7 × 10³). Write the answer in scientific notation, like 4.7 × 10^3.
  20. Multiply: (7 × 10³) × (9 × 10⁴). Write the answer in scientific notation, like 4.7 × 10^3.
More free practice: fieldbooklearning.com/practice/grade-8/multiply-numbers-in-scientific-notation/

Answer key: Multiply numbers in scientific notation

  1. 8 × 10^11
  2. 2.4 × 10^8
  3. 3.6 × 10^10
  4. 2.4 × 10^9
  5. 2.4 × 10^17
  6. 6.4 × 10^9
  7. 4.8 × 10^11
  8. 3.2 × 10^8
  9. 2 × 10^11
  10. 2.1 × 10^9
  11. 2.4 × 10^7
  12. 2.8 × 10^15
  13. 1.8 × 10^14
  14. 4 × 10^13
  15. 1.6 × 10^16
  16. 2 × 10^9
  17. 2.1 × 10^18
  18. 3.6 × 10^15
  19. 5.6 × 10^13
  20. 6.3 × 10^8