1.   Convert.

3 half hours = ___ minutes

    A. 60 B. 45
    C. 30 D. 90
    Hint

  2.   Convert.

hours = ___ minutes

    A. 75 B. 60
    C. 110 D. 90
    Hint

  3.   hours = ___ minutes
    A. 90 B. 30
    C. 45 D. 60
    Hint

  4.   It takes Elena 15 minutes to ride her bike to school. How many hours will she have ridden after 4 days?
    A. B.
    C. 1 D.
    Hint

  5.   Explain how to convert minutes to half hours.
    A. Use repeated subtraction of 30. B. Use repeated subtraction of 15.
    C. Use repeated addition of 15. D. Use repeated addition of 30.
    Hint