Shopping Subtraction Challenge

Name:

Date:

🎯 WALT (We Are Learning To)

We are learning to solve multi-step subtraction problems in shopping contexts and check our answers using addition.

✅ Success Criteria - I can:

Use subtraction to solve shopping problems with multiple steps

Calculate total costs, discounts, and change correctly

Check my subtraction answers using addition

Explain my problem-solving steps clearly

Show my working out using number sentences

🛒 Part 1: Shopping Problems

1. Sarah has $85. She buys a backpack for $32 and lunch for $15. How much money does she have left?

Answer: $__________

Check your answer using addition: __________ + __________ = __________

2. Tom saved $120 for new sports equipment. He bought cricket pads for $48 and a bat for $37. How much more money does he need to buy boots that cost $55?

Answer: $__________

3. A toy shop has a 20% off sale. If a board game normally costs $60, what is the sale price? How much do you save?

Sale price: $__________

Amount saved: $__________

4. Mia buys 3 books for $18 each and pays with a $100 note. What change should she receive?

Total cost: $__________

Change: $__________

💭 Part 2: Problem Solving & Reasoning

5. Jake had some money. He spent $28 on a jumper and $17 on a cap. He now has $35 left. How much money did he start with?

Jake started with: $__________

Explain how you solved this problem:

6. At the school canteen, sandwiches cost $6, fruit costs $3, and drinks cost $4. If you have $25, what different combinations could you buy? Show at least 2 different combinations and how much change you'd get.

7. Estimate first, then calculate: A family spends $47 on groceries, $23 on petrol, and $31 on dinner. If they started with $150, about how much do they have left?

My estimate: About $__________

Actual answer: $__________

Was your estimate close? ___________

🚀 Extension Activities

8. Challenge Problem: Create your own shopping problem that requires at least 3 steps to solve. Include the answer and show your working.

My problem:

My solution:

9. Rounding Challenge: Round these shopping totals to the nearest $10 and estimate the change from $200:

• $127 → rounds to $_______ → change from $200 ≈ $_______

• $83 → rounds to $_______ → change from $200 ≈ $_______

• $156 → rounds to $_______ → change from $200 ≈ $_______

10. Reflection: Which subtraction strategy helped you most today? Why?

Breaking numbers into smaller parts

Using a number line

Counting up from the smaller number

Using addition to check my answer

Explain your choice:

Shopping Subtraction Challenge

Shopping Subtraction Challenge

🎯 WALT (We Are Learning To)

✅ Success Criteria - I can:

🛒 Part 1: Shopping Problems

💭 Part 2: Problem Solving & Reasoning

🚀 Extension Activities

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