Prices would be rounded to the nearest 5 cents. If your bill for something is 5.02, it will be rounded down to $5. If it is 5.03, it would be rounded up to $5.05. Over a period of time, it averages out.
If the pennies were pre-1982 then 9 US pennies are very close to 1 ounce (9.145 pennies = 1 ounce). If the pennies are after 1982 then 11 US pennies are very close to one ounce (11.34 pennies = 1 ounce).
The US never made silver pennies. In 1943 the US made steel pennies. These are often mistaken for silver pennies.
Two pennIes
The diameter of a US penny is 0.75inches. There are 256 pennies in a square foot
For US money-21500 pennies would equal $215. There are 100 pennies to a dollar.
$750.00 = 75,000 pennies (cents in the US).
There are fifty coins in a roll of US one cent coins, casually called pennies.
35,000 pennies is equivalent to 350 US Dollars. ($1=100 pennies)
Pennies are minted at three locations in the US; The San Francisco Mint, The Denver Mint and the Philadelphia Mint. Pennies from San Francisco have an "S" on them. Pennies from Denver have a "D" on them and pennies from Philadelphia have no letter.
US pennies are made of a copper-plated zinc composition. They are composed of 97.5% zinc and 2.5% copper.
Death
Company that makes pennies