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

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

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

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

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