Mermaid maths quest: money
A story-led junior maths adventure using pearl patterns, shell money and underwater symmetry to budget coins, tickets and shop items.
Quick answer
By the end of this page, you will understand how to use money to buy things, count coins, and make budgets for your underwater adventures!Learning outcome
By the end of this page, you will be able to:- Count different coins and notes to find the total value
- Use money to buy items and calculate change
- Make simple budgets for your underwater shopping trips
- Recognise the value of different coins and notes in real-world situations
Why this matters
Money is everywhere – in shops, on the beach, and even in the ocean! When you go on a Mermaid Maths Quest, you'll need to buy shells, pearls, and special underwater tickets. Learning about money helps you understand how to pay for things, save your coins, and make smart choices. Whether you're buying a treasure map or a new coral home, knowing how money works helps you be a smart underwater shopper!How it works
Money comes in coins and notes. Each coin or note has a value. You can add up the values to find the total. When you buy something, you give money and get change back. To make a budget, you plan how much money you need for different items.Examples you can see
Let's imagine you're going on a Mermaid Maths Quest and need to buy some items:- You want to buy 3 shells that cost 5p each
- You also want 2 pearls that cost 10p each
- You need 1 ticket to enter the underwater cave, which costs 15p
- Shells: 3 shells × 5p = 15p
- Pearls: 2 pearls × 10p = 20p
- Ticket: 15p
- 60p – 50p = 10p
Try it as a mini adventure
Mermaid's Treasure Hunt Budget Challenge You are a mermaid on a quest to collect treasures for your underwater castle. You have 100p to spend. Your shopping list:- 3 pearls worth 12p each
- 5 seashells worth 8p each
- 2 underwater maps worth 25p each
Common mistakes
- Mistake: Thinking 20p + 30p = 40p
Why it happens: Confusing the numbers when adding.
Fix: Count on from the larger number: 30p + 20p = 50p - Mistake: Using the wrong coin for a calculation
Why it happens: Not reading the value of coins carefully.
Fix: Always check the coin's value before using it - Mistake: Forgetting to count change
Why it happens: Getting excited about buying things.
Fix: Always subtract the total from the money you paid
Parent and carer guide
Help your child by:- Playing a shop game at home with real coins
- Letting them help plan a budget for a family trip
- Using a calculator to check their answers
- Practising counting in 5p and 10p jumps
- Encouraging them to write down their calculations
Practice questions
- How much is 4 coins of 10p each?
- You have 20p and buy a shell for 12p. How much change do you get?
- How many 5p coins make 30p?
- You buy 3 tickets at 15p each. How much do you spend?
- What is the total value of 2 coins of 20p and 3 coins of 5p?
- 40p
- 8p
- 6 coins
- 45p
- 55p
FAQ
How do I know what coins to use for different amounts?
Start with the largest coins first. For example, to make 60p, use 50p + 10p. This helps you count faster.
Can I use a calculator for money?
Yes! Calculators are helpful for checking your work. But always double-check with your own counting to make sure you're right.
Why do I need to learn about money?
Money helps you buy things you need and want. It teaches you to plan and save. When you understand money, you can be a smart shopper, just like a mermaid!
What if I don’t have enough money?
If you don’t have enough, you can choose fewer items or save up more money. Planning ahead helps you avoid this problem.
How can I practice money skills at home?
Play shop with family, count your pocket money, or use coins to make different amounts. You can also pretend to be a mermaid and budget for your underwater treasures!