How Do Coins Work?
Pennies, nickels, dimes, and quarters — how to count, add, and make change with U.S. coins.
Four Coins to Know
U.S. coins come in four main types. A penny is worth 1 cent and is copper-colored. A nickel is worth 5 cents and is silver-colored and larger than a penny. A dime is worth 10 cents — it's the smallest coin but worth more than a nickel. A quarter is worth 25 cents and is the largest common coin. Understanding that size doesn't equal value is one of the first important money lessons.
Counting Coins
The most efficient way to count a pile of coins: start with the largest value and work down. Count quarters first (by 25s), then dimes (by 10s), then nickels (by 5s), then pennies (by 1s). Example: 2 quarters + 1 dime + 1 nickel + 3 pennies = 25 + 25 + 10 + 5 + 1 + 1 + 1 = 68 cents.
Making Change
Making change means figuring out what coins to give back when someone pays more than the price. If something costs 63 cents and you pay with a dollar (100 cents), the change is 100 − 63 = 37 cents. The fastest way: use the fewest coins possible. 37 cents = 1 quarter (25) + 1 dime (10) + 2 pennies (2) = 4 coins. Knowing coin values helps you do this quickly in real life.
Why Learning Money Matters
Money skills are life skills. Counting coins builds addition, skip counting, and mental math abilities. Making change builds subtraction skills. And understanding that 4 quarters = 10 dimes = 20 nickels = 100 pennies = 1 dollar builds a deep sense of equivalence — the idea that different combinations can represent the same value, which is the same concept behind equivalent fractions later in math.
A U.S. penny actually costs more than 1 cent to make — about 2.7 cents per penny due to the cost of metal and manufacturing. The U.S. Mint loses tens of millions of dollars every year producing pennies. Several countries have eliminated their lowest-denomination coins entirely (Canada retired its penny in 2013, and Australia eliminated 1- and 2-cent coins in 1992) because they cost more to produce than they're worth.
Last reviewed: April 2026