Kid-friendly explanation

Price is how much money something costs. If a sandwich costs $5, then $5 is the price. When you look at a price tag in a store, that number tells you how many dollars you need to buy it. Prices help you decide what you can and cannot afford!

Worked examples

Example 1 (younger grades):

A notebook has a price of $3 and a pencil has a price of $1.

If someone wants to buy 1 notebook and 2 pencils, the total cost is found by adding the prices:

Notebook: $3
2 pencils: 2 × $1 = $2
Total price to pay: $3 + $2 = $5.

The price of each item tells how much money is needed for that item, and the total is all the prices added together.

Example 2 (upper grades):

Suppose a game has a price of $20. A store decides to offer a 25% discount, which means the price is reduced by 25% of its original amount.

Find 25% of $20: 0.25 × 20 = 5. So the discount is $5.

New sale price: original price $20 − $5 discount = $15.

Here, the price changes because the store chose to lower it, and buyers now pay the new price of $15.

Going deeper

In economics, price is a key signal that helps match what people want to buy with what businesses want to sell. When many people want something and there is not much available, the price often rises. When fewer people want it or there is a lot available, the price often falls.

In a market economy, prices are usually set by supply and demand, which means buyers and sellers together influence what the price will be. In a command economy, government leaders may decide prices instead of letting markets set them.

Older students also see price in topics like profit (how much money is left after costs), inflation (when average prices in an economy rise over time), and incentives, which are reasons people choose one option instead of another.

Common mistakes about price

  • Mistake: Thinking price and value are always the same thing.
    Correction: Price is the amount of money charged, but value is how useful or important something feels to a person, so someone might value an item more or less than its price.
  • Mistake: Forgetting that price is usually given per unit, such as per item, per hour, or per pound.
    Correction: Always check what the price is “for” (one ticket, one hour of work, one kilogram of apples) before comparing or adding prices.
  • Mistake: Assuming prices only change randomly or because a store “feels like it.”
    Correction: Prices often change for reasons like changes in supply, changes in demand, sales and discounts, or changes in the costs of making or providing the item.

Everyday connection

Your child sees prices any time they look at a menu, a price tag in a store, or an online shopping page. When they compare two snack prices, decide how to spend allowance, or notice that a favorite toy costs more than before, they are using the idea of price in real life.

Related terms to explore

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