1.   Express 765,000,000,000 in scientific notation.
    A. 7.65 × 1011 B. 0.765 × 1012
    C. 7.65 × 1010 D. 7.65 × 10-11
    Hint

  2.   Express 47.5 × 10-5 in scientific notation.
    A. 475 × 10-6 B. 0.475 × 10-3
    C. 4.75 × 10-6 D. 4.75 × 10-4
    Hint

  3.   Express 0.034 × 107 in scientific notation.
    A. 34 × 104 B. 3.4 × 109
    C. 3.4 × 105 D. 0.34 × 106
    Hint

  4.   Evaluate (3.2 × 10-5)(5.4 × 109). Express the result in scientific notation.
    A. 0.1728 × 106 B. 17.28 × 104
    C. 1.728 × 105 D. 1.728 × 103
    Hint

  5.   Evaluate . Express the result in scientific notation.
    A. 8.0 × 10-9 B. 8.0 × 10-7
    C. 0.8 × 10-8 D. 80 × 10-8
    Hint