Subtraction Practice: Market Trader

🎯 What You'll Learn

You will pretend to be a market trader and practise making change for customers. This is real-world subtraction!

🏪 Market Story

Today you are the trader! You sell food at Mushin Market. Here are your prices:

• Rice (small bag): ₦200
• Beans: ₦150
• Garri: ₦100
• Tomatoes: ₦80
• Palm oil: ₦120

Customers are coming. Can you give the right change?

📝 Let's Learn

Customer 1: Buys garri (₦100) and pays with ₦200. Change: ₦200 − ₦100 = ₦100.

Customer 2: Buys tomatoes (₦80) and palm oil (₦120), pays ₦500. Total: ₦80 + ₦120 = ₦200. Change: ₦500 − ₦200 = ₦300.

Customer 3: Buys rice (₦200) and beans (₦150), pays ₦500. Total: ₦200 + ₦150 = ₦350. Change: ₦500 − ₦350 = ₦150.

✏️ Practice Questions

1. A customer buys beans (₦150) and pays with ₦200. What change do you give?
2. A customer buys rice (₦200) and tomatoes (₦80) and pays ₦500. What is their change?
3. A customer buys garri (₦100), beans (₦150), and palm oil (₦120) and pays ₦500. What change do they get?

Click to see answers

1. ₦200 − ₦150 = ₦50 change.
2. ₦200 + ₦80 = ₦280. ₦500 − ₦280 = ₦220 change.
3. ₦100 + ₦150 + ₦120 = ₦370. ₦500 − ₦370 = ₦130 change.

💡 Remember

Market traders use addition and subtraction all day long. First add up the total cost, then subtract from what the customer pays. Check your work by adding the change back to the total — it should equal what the customer paid!