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Grade 8 Algebra: Adding and Subtracting in Scientific Notation

Name: ______________________Date: ____________Score: ____ / 8

Level 1

Same power of 10

  1. 1. Add or subtract. Write in scientific notation:
    (3×104)+(5×104)(3 \times 10^4) + (5 \times 10^4)
  2. 2. Add or subtract. Write in scientific notation:
    (7.2×105)−(2.1×105)(7.2 \times 10^5) - (2.1 \times 10^5)
  3. 3. Add or subtract. Write in scientific notation:
    (1.4×103)+(4.3×103)(1.4 \times 10^3) + (4.3 \times 10^3)
  4. 4. Add or subtract. Write in scientific notation:
    (9.6×107)−(3.6×107)(9.6 \times 10^7) - (3.6 \times 10^7)
  5. 5. Add or subtract. Write in scientific notation:
    (2.05×102)+(3.4×102)(2.05 \times 10^2) + (3.4 \times 10^2)
  6. 6. Add or subtract. Write in scientific notation:
    (8×106)−(2.5×106)(8 \times 10^6) - (2.5 \times 10^6)
  7. 7. Add or subtract. Write in scientific notation:
    (6.3×109)+(2.6×109)(6.3 \times 10^{9}) + (2.6 \times 10^{9})
  8. 8. Add or subtract. Write in scientific notation:
    (4.75×103)−(1.5×103)(4.75 \times 10^{3}) - (1.5 \times 10^{3})