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Example 3: (5.3201×10-5)×(1.8×103) = ?

  1. 5.3201×1.8 = 9.6
  2. 10-5×103 = 10-5+3 = 10-2
    (5.3201×10-5)×(1.8×103) = 9.6×10-2
  3. 9.6×10-2 is in scientific notation.
Thus, (5.3201×10-5)×(1.8×103) = 9.6×10-2.

Example 4: (4.14×10-4)÷(8.28×100) = ?

  1. = 0.500
  2. = 10-4-0 = 10-4
    (4.14×10-4)÷(8.28×100) = 0.500×10-4
  3. 0.500×10-4 = 5.00×10-5
Thus, (4.14×10-4)÷(8.28×100) = 5.00×10-5.

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