How many copper pennies does it take to make a pound?

In 1 pound of pre-1982 copper pennies, there are approx 448 grams of weight. Knowing that a copper pre-82 penny weighs 3.11 grams, simply divide the approx 448 grams in 1 pound by the individual penny weight of 3.11grams. The answer to

"how many copper pennies does it take to make a pound" is this.

It would take 144.05144 copper pennies to weight 1 pound........give or take a couple.
One copper cent weighs 3.11 grams, and one pound is 453.59 grams. Do the math, and it comes out to 146 copper cents per pound.