5x20=100
A roll of 50 cent pieces, which contains 20 coins, weighs approximately 0.25 pounds or 113 grams.
pennies, nickles, dimes, quarters, and fifty cent pieces.
In 1960, Canadian 1 cent pieces ("pennies") were made of bronze, 5 cent pieces ("nickels") were made of nickel, and 10 cent pieces ("dimes"), 25 cent pieces ("quarters"), 50 cent pieces ("half dollars") and dollar coins were all composed of 80% silver (with, I believe, the balance being copper).
A silver fifty cent piece weighs about 12.5 grams.
91% copper
An Australian 50-cent coin weighs 15.55 grams.
A 5 cent coin typically weighs about 5 grams.
5 grams
One cent (minted 1982-present) weighs 2.5 grams. 50 of them weigh 125 grams.
There are forty twenty-five cent pieces in ten dollars(US).
The one cent piece, or penny, weighs about 3 grams. Pennies made between 1944 and 1982 weigh 3.11 grams while pennies made afterwards weigh 2.8 grams.