1.   Estimate. Compare to the group of 10.
   
    A. about 40 B. about 20
    C. about 80 D. about 60
    Hint

  2.   Estimate. Compare to the group of 10.
   
    A. about 50 B. about 80
    C. about 20 D. about 100
    Hint

  3.   Estimate. Compare to the group of 10.
   
    A. about 15 B. about 100
    C. about 20 D. about 50
    Hint

  4.   Estimate. Compare to the group of 10.
   
    A. about 70 B. about 20
    C. about 40 D. about 100
    Hint

  5.   Estimate. Compare to the group of 10.
   
    A. about 70 B. about 40
    C. about 50 D. about 20
    Hint