Time-travel maths quest: multiplication

Quick answer

You can use multiplication to solve time-related puzzles in a Time-travel maths quest by counting equal groups, using arrays, and spotting repeated patterns on clocks, calendars, and ancient number systems.

Learning outcome

By the end of this page, you will be able to use multiplication to work out how many minutes, hours, or days are in a given time period, and solve time-related puzzles using equal groups, arrays, and repeated patterns.

• You can count equal groups of minutes on a clock using multiplication
• You can use arrays to show how many days are in a week or months in a year
• You can solve time puzzles by spotting repeated patterns in clocks or calendars
• You can use multiplication to work out how much time has passed in a journey or activity

Why this matters

Time is everywhere, and multiplication helps us understand it quickly. When you're in a Time-travel maths quest, you'll need to count how many minutes are in an hour, how many days are in a week, or how many hours are in a day. Multiplication makes these big numbers easy to handle. It also helps you in real life, like when you're cooking, planning a trip, or even playing games. Understanding time with multiplication helps you be more confident with time, and it's a skill that grows with you!

How it works

Multiplication is like counting the same number over and over again. When we work with time, we often count equal groups of the same size.

1. Look at a clock and see how many minutes are in one hour (60 minutes)
2. Count how many hours are in a day (24 hours)
3. Use arrays to show how many days are in a week (7 days)
4. Use repeated patterns to figure out how much time has passed

Examples you can see

Let’s imagine you are on a Time-travel maths quest and you meet a wizard who tells you that every hour, he makes 3 magic potions. If you watch for 4 hours, how many potions does he make?

• Each hour = 3 potions
• 4 hours = 4 × 3 = 12 potions

This is multiplication because we are counting 3 potions, 4 times.

Another example: You are looking at a calendar and see that there are 7 days in a week. If you want to know how many days are in 5 weeks, you can count:

• 1 week = 7 days
• 5 weeks = 5 × 7 = 35 days

On a clock, there are 60 minutes in one hour. If you watch a movie that lasts 2 hours, how many minutes is that?

• 1 hour = 60 minutes
• 2 hours = 2 × 60 = 120 minutes

Try it as a mini adventure

Imagine you are on a Time-travel maths quest in ancient Egypt. You meet a scribe who needs your help. The scribe tells you that he writes 5 letters every hour. You need to find out how many letters he writes in 3 hours. How do you solve this?

1. Each hour = 5 letters
2. 3 hours = 3 × 5 = 15 letters

Now, you are at a Roman market. You see that a cart carries 8 bags of grain. If there are 4 carts, how many bags of grain are there in total?

1. Each cart = 8 bags
2. 4 carts = 4 × 8 = 32 bags

Finally, you are in a time machine and it takes 6 minutes to travel 1 time zone. If you travel 5 time zones, how long does it take?

1. 1 time zone = 6 minutes
2. 5 time zones = 5 × 6 = 30 minutes

Common mistakes

• Mistake: Thinking that 5 × 6 = 30, but forgetting that 6 × 5 = 30 too.
  Why it happens: Confusing the order of multiplication.
  Fix: Remember that 5 × 6 and 6 × 5 both equal 30. The order doesn’t change the answer.
• Mistake: Counting the same minute twice on a clock.
  Why it happens: Not being careful when counting minutes.
  Fix: Use multiplication to count minutes in groups, like 5 minutes × 12 = 60 minutes.
• Mistake: Adding instead of multiplying when working with time.
  Why it happens: Not recognizing that repeated groups need multiplication.
  Fix: If you have 4 groups of 3 items, multiply: 4 × 3 = 12, not add 4 + 4 + 4 + 3.

Parent and carer guide

Help your child with multiplication in time by:

1. Using clocks at home to count minutes in groups
2. Playing time games where they multiply hours by minutes
3. Using calendars to count days in weeks or months
4. Practising with simple real-life time puzzles like “If you walk 10 minutes every day, how many minutes in a week?”
5. Encouraging them to draw arrays to show time problems

Don’t worry if they make mistakes – they’re learning! Ask them to explain their thinking so you can help them find the right path.

Practice questions

1. How many minutes are in 3 hours?
2. How many days are in 6 weeks?
3. If a movie lasts 2 hours, how many minutes is that?
4. If you eat 4 cookies every day for 5 days, how many cookies did you eat?
5. How many minutes are in 7 hours?
6. If a bus comes every 10 minutes, how many buses come in 40 minutes?
7. If a bird flies 6 miles every hour, how far does it fly in 3 hours?
8. How many hours are in 2 days?
9. If a garden has 8 flowers in each row and there are 5 rows, how many flowers are there?
10. How many minutes are in 9 hours?

Answers:

1. 3 × 60 = 180 minutes
2. 6 × 7 = 42 days
3. 2 × 60 = 120 minutes
4. 5 × 4 = 20 cookies
5. 7 × 60 = 420 minutes
6. 40 ÷ 10 = 4 buses
7. 3 × 6 = 18 miles
8. 2 × 24 = 48 hours
9. 5 × 8 = 40 flowers
10. 9 × 60 = 540 minutes

FAQ

What is multiplication?

Multiplication is a way to add the same number many times quickly. For example, 3 + 3 + 3 = 9, but 3 × 3 = 9 too.

How does multiplication help with time?

Multiplication helps you count large numbers of minutes, hours, or days quickly. For example, if you know there are 60 minutes in an hour, you can multiply to find out how many minutes are in 5 hours.

Can I use arrays for time problems?

Yes! Arrays help you see how many groups there are and how many items are in each group. For example, a calendar with 7 days in a week can be shown as 7 rows and 1 column, or 1 row and 7 columns.

How can I practice multiplication with time at home?

You can count how many minutes are in 5 hours, or how many days are in 4 weeks. Use clocks, calendars, or even your fingers to help!

What if I forget my multiplication facts?

You can use repeated addition, draw arrays, or count on your fingers. It’s okay to take your time and use tools to help you!