347 pennies equals exactly $3.47 - there is no rounding involved in pennies-to-dollars conversion.
That is 6.94 standard penny rolls. Most banks accept rolled coins; a full roll of 50 pennies is worth $0.50.
The greedy coin breakdown uses the fewest possible coins, starting with dollar coins, then half-dollars, quarters, dimes, nickels, and pennies.
Next stepTo deposit your coins at a bank or coin machine, roll pennies in groups of 50 (each roll = $0.50). Most credit unions accept rolled coins for free.