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Grade 8 Algebra: Adding and Subtracting in Scientific Notation

Name: ______________________Date: ____________Score: ____ / 8

Level 2

Different powers of 10

  1. 1. Add or subtract. Write in scientific notation:
    (3×105)+(2×104)(3 \times 10^5) + (2 \times 10^4)
  2. 2. Add or subtract. Write in scientific notation:
    (6.5×106)−(5×105)(6.5 \times 10^6) - (5 \times 10^5)
  3. 3. Add or subtract. Write in scientific notation:
    (4.1×103)+(9×102)(4.1 \times 10^3) + (9 \times 10^2)
  4. 4. Add or subtract. Write in scientific notation:
    (1.2×108)−(3×106)(1.2 \times 10^8) - (3 \times 10^6)
  5. 5. Add or subtract. Write in scientific notation:
    (7×104)+(6×102)(7 \times 10^4) + (6 \times 10^2)
  6. 6. Add or subtract. Write in scientific notation:
    (5.5×105)−(5×104)(5.5 \times 10^5) - (5 \times 10^4)
  7. 7. Add or subtract. Write in scientific notation:
    (2.4×106)+(3×105)(2.4 \times 10^{6}) + (3 \times 10^{5})
  8. 8. Add or subtract. Write in scientific notation:
    (9×103)−(4×102)(9 \times 10^{3}) - (4 \times 10^{2})