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

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

  3.   Estimate. Compare to the group of 10.
   
    A. about 30 B. about 80
    C. about 10 D. about 60
    Hint

  4.   Estimate. Compare to the group of 10.
   
    A. about 80 B. about 50
    C. about 40 D. about 20
    Hint

  5.   Estimate. Compare to the group of 10.
   
    A. about 120 B. about 60
    C. about 90 D. about 30
    Hint