1.   Write a multiplication problem for the model shown.
   
    A. 4 × 2 B. 0.4 × 2
    C. 4 × 4 D. 0.8 × 2
    Hint

  2.   Evaluate 4x if x = 0.016.
    A. 0.064 B. 6.4
    C. 0.64 D. 64
    Hint

  3.   A dollar bill is 6.125 inches long. Caitlin used it as a measuring device and found that her shelf was 5 times the length of the dollar bill. How long is her shelf?
    A. 30.605 in. B. 30.625 in.
    C. 306.05 in. D. 306.25 in.
    Hint

  4.   Use estimation to place the decimal point in the product
21.6 × 4 = 864.
    A. 8.64 B. 0.864
    C. 86.4 D. 864
    Hint

  5.   Find 8k if k = 0.5238.
    A. 5.285 B. 4.1904
    C. 4.9231 D. 3.483
    Hint