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Multiply decimals 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: (5.8 × 10⁴) × (3.4 × 10³). Write the answer in scientific notation, like 4.7 × 10^3.
  2. Multiply: (7.1 × 10⁻⁴) × (8 × 10²). Write the answer in scientific notation, like 4.7 × 10^3.
  3. Multiply: (6.2 × 10⁰) × (2.8 × 10²). Write the answer in scientific notation, like 4.7 × 10^3.
  4. Multiply: (8.3 × 10⁴) × (7.6 × 10⁴). Write the answer in scientific notation, like 4.7 × 10^3.
  5. Multiply: (6.3 × 10⁻⁶) × (8.4 × 10²). Write the answer in scientific notation, like 4.7 × 10^3.
  6. Multiply: (5 × 10⁻⁵) × (7.9 × 10²). Write the answer in scientific notation, like 4.7 × 10^3.
  7. Multiply: (6.6 × 10⁻⁴) × (1.5 × 10⁰). Write the answer in scientific notation, like 4.7 × 10^3.
  8. Multiply: (5.8 × 10⁻³) × (5.5 × 10⁻³). Write the answer in scientific notation, like 4.7 × 10^3.
  9. Multiply: (6.7 × 10⁵) × (5.8 × 10⁻¹). Write the answer in scientific notation, like 4.7 × 10^3.
  10. Multiply: (3.5 × 10⁻⁵) × (1.6 × 10⁻⁸). Write the answer in scientific notation, like 4.7 × 10^3.
  11. Multiply: (5.8 × 10⁻²) × (7.2 × 10⁻³). Write the answer in scientific notation, like 4.7 × 10^3.
  12. Multiply: (3.8 × 10⁻⁴) × (4.8 × 10⁴). Write the answer in scientific notation, like 4.7 × 10^3.
  13. Multiply: (7.5 × 10⁻⁶) × (6.2 × 10⁻⁵). Write the answer in scientific notation, like 4.7 × 10^3.
  14. Multiply: (4.2 × 10⁻¹) × (2.9 × 10⁻⁵). Write the answer in scientific notation, like 4.7 × 10^3.
  15. Multiply: (5.1 × 10³) × (2.4 × 10⁴). Write the answer in scientific notation, like 4.7 × 10^3.
  16. Multiply: (4.8 × 10⁶) × (6.8 × 10¹⁰). Write the answer in scientific notation, like 4.7 × 10^3.
  17. Multiply: (4.4 × 10⁷) × (8.1 × 10⁷). Write the answer in scientific notation, like 4.7 × 10^3.
  18. Multiply: (7.8 × 10⁴) × (7.3 × 10⁻⁵). Write the answer in scientific notation, like 4.7 × 10^3.
  19. Multiply: (8.7 × 10⁻¹) × (4.5 × 10⁴). Write the answer in scientific notation, like 4.7 × 10^3.
  20. Multiply: (3.5 × 10⁻⁷) × (6.3 × 10⁻²). Write the answer in scientific notation, like 4.7 × 10^3.
More free practice: fieldbooklearning.com/ca/practice/grade-8/multiply-decimals-in-scientific-notation/

Answer key: Multiply decimals in scientific notation

  1. 1.972 × 10^8
  2. 5.68 × 10^-1
  3. 1.736 × 10^3
  4. 6.308 × 10^9
  5. 5.292 × 10^-3
  6. 3.95 × 10^-2
  7. 9.9 × 10^-4
  8. 3.19 × 10^-5
  9. 3.886 × 10^5
  10. 5.6 × 10^-13
  11. 4.176 × 10^-4
  12. 1.824 × 10^1
  13. 4.65 × 10^-10
  14. 1.218 × 10^-5
  15. 1.224 × 10^8
  16. 3.264 × 10^17
  17. 3.564 × 10^15
  18. 5.694 × 10^0
  19. 3.915 × 10^4
  20. 2.205 × 10^-8