Part B gather all of your pennies dated before 1982. Then follow the steps to complete the table include units as nessecary.
1. Record the number of pennies dated before 1982
2. Weigh (as a group) the pennies dated before 1982. Record the total mass.
3. Calculate and record the average mass of a single penny

Table:
-Number or pennies:
-Combined mass of the pennies(g):
-average mass of a penny (g)