Unit prices
Key Notes :
The unit price is the price per item or per unit of measure.
- Definition of Unit Price: The unit price is the cost of a single item or unit of a product. For example, if a box of 12 chocolates costs $6, the unit price is $6 divided by 12, which is $0.50 per chocolate.
- Comparing Prices: Unit prices help in comparing different products or quantities to find the best value. For instance, if one box of cereal costs $4 and contains 16 ounces while another costs $5 and contains 20 ounces, calculating the unit price will help identify the better deal.
- Calculation: To calculate unit price, divide the total cost by the total number of units. It helps in determining the cost efficiency of products and allows consumers to make informed decisions.
- Real-Life Examples: Use real-life examples to illustrate the concept. For instance, comparing the price per apple or per pencil in a pack, or looking at grocery items to determine which package offers the best value.
- Use of Math Skills: Unit prices involve division and understanding fractions. This concept helps in strengthening basic math skills, encouraging problem-solving and critical thinking.
- Importance in Budgeting: Understanding unit prices is vital in managing budgets and making wise purchasing decisions. It helps in getting the most value for money when shopping.
Learn with an example
1) An 8-kilogram bag of oranges costs ₹1,262.00.
What is the unit price?
₹______ per kilogram
Find the unit price. Divide the total cost by the number of kilograms.
₹1,262.00 ÷ 8 = ₹157.75
The unit price is ₹157.75 per kilogram.
2) Which is the better buy?
- 3-kilogram bag of rice for ₹297.00
- 5-kilogram bag of rice for ₹494.00
Find each unit price. Divide the total cost by the number of kilograms.
₹297.00 ÷ 3 = ₹99.00
₹494.00 ÷ 5 = ₹98.80
The unit price for the 5-kilogram bag is lower than for the 3-kilogram bag. The 5-kilogram bag is the better buy.
3) Which is the better buy?
- 2-kilogram bag of red onions for ₹136.50
- 5-kilogram bag of red onions for ₹341.00
Find each unit price. Divide the total cost by the number of kilograms.
₹136.50 ÷ 2 = ₹68.25
₹341.00 ÷ 5 = ₹68.20
The unit price for the 5-kilogram bag is lower than for the 2-kilogram bag. The 5-kilogram bag is the better buy.
Let’s practice!🖊️