X Tables
Hidden Multiplication

Multiplication hiding in sailing crew tasks

Tasks per crew member multiplied by crew creates a checklist.

Quick answer

Multiplication is hiding in sailing crew tasks because each job on the boat is done by a certain number of crew members, and you need to multiply the number of jobs by the number of crew members to see how many tasks there are in total.

Learning outcome

By the end of this page, you will be able to use multiplication to work out how many jobs there are when you know how many crew members there are and how many jobs each one does. Success signs:
  • You can count how many jobs each crew member does
  • You can multiply the number of crew members by the number of jobs
  • You can make a list of all the jobs using multiplication
  • You can solve a sailing crew problem using multiplication

Why this matters

Multiplication helps sailors know how many tasks there are on the boat. It helps them plan how to get everything done, so the boat can sail safely and quickly. Whether you're sailing a small boat or a big ship, you need to know how many jobs there are so everyone knows what to do. This is just like when you're setting the table for a family dinner – you need to know how many plates, forks, and cups you need for everyone.

How it works

Let’s imagine you are on a sailing boat with a small crew. You need to know how many jobs there are in total. If there are 3 crew members and each one does 4 jobs, then you can multiply 3 by 4 to get 12 jobs in total. Here’s how to think about it:
  1. First, decide how many crew members there are
  2. Then, decide how many jobs each crew member does
  3. Finally, multiply those two numbers together

Examples you can see

Let’s look at a real sailing example. Example 1: A sailing boat has 4 crew members. Each one is responsible for checking 3 parts of the boat.
  • How many checks are there in total?
  • Answer: 4 crew members × 3 checks = 12 checks
Example 2: A sailing team has 6 crew members. Each one needs to fill 2 water bottles.
  • How many water bottles are needed?
  • Answer: 6 crew members × 2 water bottles = 12 water bottles
Example 3: A sailing boat has 5 crew members. Each one needs to take 2 photos for the trip.
  • How many photos are taken in total?
  • Answer: 5 crew members × 2 photos = 10 photos

Try it as a mini adventure

Let’s go on a sailing adventure! You are captain of a small boat with 4 crew members. You have a list of jobs to do before you sail. Job 1: Each crew member checks the sails – 4 checks Job 2: Each crew member checks the ropes – 4 checks Job 3: Each crew member checks the compass – 4 checks Job 4: Each crew member checks the anchor – 4 checks How many checks are there in total?
  • 4 crew members × 4 checks = 16 checks
You need to make sure all 16 checks are done. That’s a lot of work, but it makes sure the boat is safe. Now, let’s add one more job. Job 5: Each crew member takes 2 photos of the boat
  • 4 crew members × 2 photos = 8 photos
How many tasks are there now?
  • 16 checks + 8 photos = 24 tasks
That’s a big job list! But with multiplication, you know exactly how many tasks there are. You can write them all down to make sure nothing is missed.

Common mistakes

  • Mistake: Counting the crew members wrong
    Why it happens: It’s easy to get confused when counting people.
    Fix: Use your fingers or count out objects to make sure you have the right number.
  • Mistake: Forgetting to multiply the number of jobs by the number of crew
    Why it happens: It’s easy to think that each crew member does one job only.
    Fix: Write down how many jobs each person does, then multiply by the number of people.
  • Mistake: Adding instead of multiplying
    Why it happens: When you see two numbers, it's natural to add them.
    Fix: Remember: if there are 3 crew members and each does 4 jobs, you multiply 3 × 4 = 12.

Parent and carer guide

Parents and carers can help by:
  • Asking questions like “How many people are helping with this task?” and “How many tasks does each person do?”
  • Using everyday examples like setting the table or packing for a trip to show multiplication in action
  • Letting the child count out objects to make sure they understand how groups work
  • Encouraging the child to write or draw their own sailing tasks
  • Not worrying if they make a mistake – it's part of learning!

Practice questions

  1. There are 5 crew members and each one fills 2 water bottles. How many bottles are filled?
  2. There are 3 crew members and each one checks 4 sails. How many sails are checked?
  3. There are 6 crew members and each one takes 3 photos. How many photos are taken?
  4. There are 2 crew members and each one checks 5 ropes. How many ropes are checked?
  5. There are 7 crew members and each one does 2 jobs. How many jobs are there?
Answers:
  1. 5 × 2 = 10
  2. 3 × 4 = 12
  3. 6 × 3 = 18
  4. 2 × 5 = 10
  5. 7 × 2 = 14

FAQ

What is multiplication?

Multiplication is a way to add the same number many times quickly. For example, 3 × 4 means 3 groups of 4, which is the same as 4 + 4 + 4 = 12.

Why do sailors use multiplication?

Sailors use multiplication to plan how many tasks there are on the boat. This helps them organize their work so everyone knows what to do and the boat can sail safely.

Can I use multiplication for other things?

Yes! You can use multiplication for anything where you have equal groups. For example, if you have 5 boxes with 4 toys in each, you can multiply 5 × 4 to find out how many toys there are in total.

How can I practice multiplication?

You can practice by counting out objects, making lists of jobs, or playing games with your family. You can also use your fingers or draw pictures to help you multiply.

What if I don’t know my multiplication facts?

That’s okay! You can use addition to find the answer, or count out objects to help you. With practice, you’ll get better and faster at multiplying.