Unit prices

Key notes:

🔹 What is Unit Price?

• A unit price tells us the cost of one unit of an item.
• It helps us compare prices fairly when items come in different quantities or sizes.

🔹 Why Unit Prices are Useful

• To find the best value for money 🛒
• To compare prices of items sold in different packs or weights
• To make smart shopping decisions

🔹 Formula for Unit Price

Unit Price = Total Price / Number of Units

🔹 Units Can Be

• Weight (per kg, per gram)
• Volume (per litre, per ml)
• Quantity (per item, per piece)

🔹 Example 1

• ₹120 for 4 notebooks
• Unit price = 120 ÷ 4 = ₹30 per notebook

🔹 Example 2

• 2 kg rice costs ₹90
• Unit price = 90 ÷ 2 = ₹45 per kg

🔹 Comparing Two Products

• Product A: ₹60 for 3 pens → ₹20 per pen
• Product B: ₹90 for 5 pens → ₹18 per pen
  ✔️ Product B is cheaper per pen

🔹 Key Tip

• Always make sure the units are the same before comparing prices.

🔹 Real-Life Uses

• Grocery shopping 🥦
• Fuel prices (₹ per litre) ⛽
• Mobile data plans (₹ per GB) 📱

🔹 Common Mistake to Avoid

• Comparing total prices without checking quantity ❌

✨ Remember:

The item with the lower unit price gives better value.

Learn with an example

let’s practice!