Travel Maths
Postcard Stamps maths mission
A junior real-world challenge using postcard stamps to practise multiplication without feeling like a worksheet.
Quick answer
You can use postcard stamps to practise multiplication in a fun, real-world way by thinking about how many stamps you need for different numbers of postcards, or how many postcards you can send with a given number of stamps.Learning outcome
By the end of this page, you will be able to use multiplication to work out how many stamps you need for a number of postcards, or how many postcards you can send with a given number of stamps. Success signs:- You can count stamps in groups
- You can multiply the number of stamps per postcard by the number of postcards
- You can solve real-life problems using multiplication
- You can explain your thinking when solving stamp problems
Why this matters
Multiplication helps you solve problems quickly when you have equal groups of things. When you go on holiday or send postcards, you might need to work out how many stamps to buy or how many postcards you can send. This is real-life maths that helps you be more confident in your daily life. Whether you're planning a trip or sharing a collection, multiplication makes it easier to count and calculate.How it works
Multiplication is about equal groups. If you have 3 postcards and each needs 2 stamps, you have 3 groups of 2 stamps. You can add them up: 2 + 2 + 2 = 6 stamps. Or you can multiply: 3 × 2 = 6 stamps. This is how you work out how many stamps you need.Examples you can see
Let’s imagine you are going to send some postcards and you need to know how many stamps to buy. Here are some examples:| Number of postcards | Stamps per postcard | Total stamps needed |
|---|---|---|
| 1 | 2 | 1 × 2 = 2 |
| 2 | 2 | 2 × 2 = 4 |
| 3 | 2 | 3 × 2 = 6 |
| 4 | 2 | 4 × 2 = 8 |
| 5 | 2 | 5 × 2 = 10 |
| Total stamps | Stamps per postcard | Number of postcards |
|---|---|---|
| 6 | 2 | 6 ÷ 2 = 3 |
| 10 | 2 | 10 ÷ 2 = 5 |
| 12 | 2 | 12 ÷ 2 = 6 |
Try it as a mini adventure
Imagine you are on a holiday trip and you want to send postcards to your friends. You have 20 stamps in your wallet. Each postcard needs 2 stamps. How many postcards can you send? Let’s go through this step by step: 1st time: You have 20 stamps and each postcard needs 2 stamps. 2nd time: You can send 1 postcard using 2 stamps. 3rd time: You have used 2 stamps, so you have 20 - 2 = 18 stamps left. 4th time: You can send 2 postcards using 4 stamps. 5th time: You have used 4 stamps, so you have 20 - 4 = 16 stamps left. 6th time: You can send 3 postcards using 6 stamps. 7th time: You have used 6 stamps, so you have 20 - 6 = 14 stamps left. 8th time: You can send 4 postcards using 8 stamps. 9th time: You have used 8 stamps, so you have 20 - 8 = 12 stamps left. 10th time: You can send 5 postcards using 10 stamps. 11th time: You have used 10 stamps, so you have 20 - 10 = 10 stamps left. 12th time: You can send 6 postcards using 12 stamps. 13th time: You have used 12 stamps, so you have 20 - 12 = 8 stamps left. 14th time: You can send 7 postcards using 14 stamps. 15th time: You have used 14 stamps, so you have 20 - 14 = 6 stamps left. 16th time: You can send 8 postcards using 16 stamps. 17th time: You have used 16 stamps, so you have 20 - 16 = 4 stamps left. 18th time: You can send 9 postcards using 18 stamps. 19th time: You have used 18 stamps, so you have 20 - 18 = 2 stamps left. 20th time: You can send 10 postcards using 20 stamps. So, you can send 10 postcards with 20 stamps.Common mistakes
- Mistake: Thinking that 4 × 3 = 12, but confusing it with 3 × 4 = 12.
Why it happens: Children might not understand that multiplication is commutative.
Fix: Show that 4 groups of 3 and 3 groups of 4 both make 12 by drawing arrays or using physical objects. - Mistake: Adding instead of multiplying.
Why it happens: Children might not yet understand that multiplication is repeated addition.
Fix: Use arrays or equal groups to show that 3 × 4 means 3 groups of 4, which is 4 + 4 + 4 = 12. - Mistake: Forgetting to check if the answer makes sense.
Why it happens: Children might rush through problems.
Fix: Ask children to think: “If I have 5 postcards and each needs 2 stamps, do I need more than 5 stamps? Yes, so 10 stamps makes sense.”
Parent and carer guide
Parents and carers can help by:- Using real postcards and stamps at home to act out multiplication problems.
- Playing multiplication games with stamps, like “How many stamps for 6 postcards?”
- Encouraging children to explain their thinking, not just give the answer.
- Using the stamps to create arrays or groupings on paper or with counters.
- Practising multiplication facts with a focus on 2s, since each postcard needs 2 stamps.
Practice questions
- How many stamps do you need for 3 postcards if each needs 2 stamps?
- If you have 12 stamps and each postcard needs 2 stamps, how many postcards can you send?
- How many stamps are needed for 5 postcards if each needs 2 stamps?
- If you can send 8 postcards with 16 stamps, how many stamps does each postcard need?
- How many stamps are needed for 7 postcards if each needs 2 stamps?
- 3 × 2 = 6 stamps
- 12 ÷ 2 = 6 postcards
- 5 × 2 = 10 stamps
- 16 ÷ 8 = 2 stamps per postcard
- 7 × 2 = 14 stamps
FAQ
How can I use stamps to learn multiplication?
You can use stamps to learn multiplication by thinking about how many stamps you need for a certain number of postcards, or how many postcards you can send with a given number of stamps. This makes multiplication more visual and real.
What is the easiest way to learn 2 times tables?
The easiest way is to count by 2s: 2, 4, 6, 8, 10, 12, 14, 16, 18, 20, 22, 24. You can also use your fingers or objects like stamps to make groups of 2.
Why is multiplication important for travel?
Multiplication helps you work out how many stamps you need, how much money you'll spend, or how many items you can pack. It helps you plan and solve problems quickly when you're on the go.
Can I use this method for other numbers of stamps?
Yes! You can use this method for any number of stamps per postcard. For example, if each postcard needs 3 stamps, you multiply the number of postcards by 3.
How can I make this more fun for my child?
Make it into a game! Use different stamps, create a travel adventure, or let your child design their own postcards and stamps. You can also use it to plan a real trip or a pretend holiday!