Civil Service Exam Reviewer · Basic Operations · hard

Multiply: (6 × 105) × (8 × 105). Express in scientific notation.

  1. 48 × 1025
  2. 4.8 × 109
  3. 4.8 × 1011
  4. 14 × 1010

Answer

C. 4.8 × 1011

Solution

6 × 8 = 48 and 105 × 105 = 1010. Normalized: 4.8 × 1011.

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