📝 Practice Worksheets
🛠️ Related Tools
🔑 Key Concepts
- A unit price tells the cost for one item, one pound, one ounce, or one unit.
- To find a unit price, divide the total cost by the number of units.
- When dividing decimals, use place value carefully and keep track of the decimal point.
- Division can help compare prices and determine which deal is better.
- Unit price is a useful real-world application of decimal division.
✏️ Worked Examples — Finding a Unit Price
🧠 Math Vocabulary
- Unit Price: the cost for one unit of something.
- Rate: a comparison of two quantities with different units.
- Dividend: the number being divided.
- Divisor: the number you divide by.
- Quotient: the answer to a division problem.
💡 Main Idea
This lesson focuses on using decimal division to find a unit price. When you know the total cost and the number of units, divide to find the cost for one unit. This is a rate problem: \(\text{unit price} = \text{total cost} \div \text{number of units}\). Once you find the unit price, you can compare products, make shopping decisions, and better understand real-world decimal division.
📚 What You Should Already Know
Before this lesson, students should be comfortable dividing whole numbers, understanding place value in decimals, and reading money amounts. It also helps to understand that division can be used to split a total amount into equal groups or to find the value of one item when the total and quantity are known.
🚀 What Comes Next
After learning to divide decimals to find a unit price, students can move into comparing unit rates, solving multi-step shopping problems, and deciding which purchase is the better buy. This also connects to ratio reasoning, proportional relationships, and more advanced word problems involving tax, discounts, and price comparisons.
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