Maths Adventures
Ocean maths quest: money
A story-led junior maths adventure using reefs, ships and underwater maps to budget coins, tickets and shop items.
Quick answer
You can use maths to plan your ocean adventure and budget your coins, tickets, and shop items so you don't run out of money!Learning outcome
By the end of this page, you will be able to use addition and subtraction to plan your ocean adventure and budget your money for coins, tickets, and shop items. Success signs:- You can count up how much money you have
- You can add up the cost of your ocean trip items
- You can work out how much money you'll have left after shopping
- You can plan your ocean adventure without running out of coins
Why this matters
Money maths is super important for your ocean adventure! When you go to the beach or plan a trip, you need to know how much things cost. Whether you're buying a ticket for a boat ride, buying snacks, or saving up for a new toy, you use maths to count your coins and make sure you have enough money. In the ocean, you might need to budget for a treasure hunt, a submarine ride, or a seafood lunch. Understanding money helps you make smart choices and enjoy your ocean fun without worrying about running out of coins!How it works
To plan your ocean maths quest, you need to:- Count how many coins you have
- Add up the prices of the things you want to buy
- Subtract the total cost from your money
- Check if you have enough coins for everything
Examples you can see
Let's imagine you're planning a trip to the coral reef. You have 15 coins in your pocket. You want to buy:- A snorkel mask that costs 5 coins
- A bucket of fish food that costs 3 coins
- A map of the ocean that costs 4 coins
Try it as a mini adventure
Adventure: The Ocean Treasure Hunt You're on a treasure hunt in the ocean! You start with 20 coins. You find a treasure chest with these items:- 10 coins inside the chest
- A golden fish that costs 6 coins
- A map that costs 8 coins
- A diving helmet that costs 5 coins
Common mistakes
- Mistake: Adding up prices wrong Why it happens: When you're excited about shopping, you might add numbers quickly and make a mistake Fix: Count carefully, use your fingers, or write down each number as you add it
- Mistake: Forgetting to add your starting coins Why it happens: You might only think about what you're spending, not what you already have Fix: Always write down how many coins you start with, then add any you find or earn
- Mistake: Not checking if you have enough money Why it happens: You might buy something you can't afford Fix: Always subtract your total spending from your money to see if you have enough
Parent and carer guide
Parents and carers, here's how to help your child with ocean money maths:- Set up a pretend ocean shop with coins and items
- Let your child be the shopkeeper and count out change
- Use real coins to practice counting and adding
- Play "budgeting games" where you plan an ocean trip together
- Encourage your child to write down their numbers to avoid mistakes
- Ask questions like "How much more do you need?" or "Do you have enough money?"
- Does your child count carefully?
- Do they understand that more coins = more money?
- Can they subtract to find how much money they have left?
- Your child might make small mistakes – that's normal!
- They don't need to be perfect, just learning
- Keep the focus on having fun with maths
Practice questions
- You start with 12 coins. You buy a fish tank for 7 coins. How many coins do you have left?
- You find 8 coins on the beach. You had 5 coins in your pocket. How many coins do you have now?
- You want to buy a starfish for 4 coins and a seashell for 3 coins. How much do you spend altogether?
- You have 15 coins. You buy a diving mask for 6 coins and a snorkel for 5 coins. How many coins do you have left?
- You start with 20 coins. You spend 12 coins on ocean tickets. How many coins do you have left?
- 12 - 7 = 5 coins
- 8 + 5 = 13 coins
- 4 + 3 = 7 coins
- 15 - 6 - 5 = 4 coins
- 20 - 12 = 8 coins
FAQ
What is money maths?
Money maths is using addition and subtraction to count coins, buy things, and make sure you have enough money for your ocean adventure.
How do I know if I have enough coins?
Add up how much everything costs, then subtract that total from your coins. If you have a positive number left, you have enough!
Can I use my fingers to count coins?
Yes! Fingers are great for counting and adding up your ocean money.
What if I spend too much money?
If you spend too much, you can't buy what you want. That's why it's important to plan your ocean trip and budget your coins carefully.
How can I practice money maths at home?
You can set up a pretend ocean shop, use real coins to practice counting, or plan a fun ocean trip together and budget your coins!