Civil Service Exam Reviewer · Basic Operations · hard

Multiply: (6 × 105) × (2 × 104). Express in scientific notation.

  1. 1.2 × 1010
  2. 12 × 1020
  3. 1.2 × 108
  4. 8 × 109

Answer

A. 1.2 × 1010

Solution

6 × 2 = 12 and 105 × 104 = 109. Normalized: 1.2 × 1010.

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