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Maths Facts

Why clocks count in fives

Connect minute marks to counting by fives around 60 minutes.

Quick answer

Clocks count in fives because each number on the clock face represents five minutes, making it easy to tell time by counting the minutes in groups of five.

Learning outcome

By the end of this page, you will understand why the numbers on a clock face go up in fives and how to use this pattern to read time quickly. Success signs:
  • You can count the minutes around a clock by fives
  • You can tell the time when the minute hand points to any number
  • You can explain how the five-minute pattern helps you read time
  • You can use this pattern to solve simple time problems

Why this matters

Understanding why clocks count in fives helps you learn to tell time quickly and easily. It's like having a secret code that makes time reading fun and simple. This skill is useful for:
  • Knowing when your school bus arrives
  • Planning your playtime or bedtime
  • Understanding how long activities take
  • Being on time for fun events

How it works

Clocks are special circles divided into 60 equal parts. Each part is one minute. If we count around the clock face, we see that every fifth minute is marked with a number. This is because:
  1. A full circle has 60 minutes
  2. 60 divided by 12 equals 5
  3. Each number on the clock represents 5 minutes
  4. So we count: 5, 10, 15, 20, 25, 30, 35, 40, 45, 50, 55, 60

Examples you can see

Let's imagine you're looking at a clock face: How numbers on the clock relate to minutes
Number Minutes
12 0 minutes
1 5 minutes
2 10 minutes
3 15 minutes
4 20 minutes
5 25 minutes
6 30 minutes
7 35 minutes
8 40 minutes
9 45 minutes
10 50 minutes
11 55 minutes
12 60 minutes
Try this: Draw a clock face and write the numbers in the right places. Then, count around the clock by fives to see how it works.

Try it as a mini adventure

Adventure: The Time-Traveling Clock You're a time-traveler who has landed on a strange planet where the clocks count in different ways. Your mission is to find the clock that counts in fives and use it to tell time.
  1. First, look at the clock on the wall. It has numbers 1 to 12 around the edge.
  2. Count the minutes by fives: 5, 10, 15, 20, 25, 30, 35, 40, 45, 50, 55, 60.
  3. Find the number that shows 35 minutes. What number is that?
  4. Find the number that shows 10 minutes. What number is that?
  5. What time is it when the minute hand points to the number 8?
Answer these questions:
  • What number shows 35 minutes? 7
  • What number shows 10 minutes? 2
  • What time is it when the minute hand points to 8? 40 minutes

Common mistakes

  • Mistake: Thinking the numbers on the clock show the actual minutes instead of five-minute intervals.
    Why it happens: Children may confuse the numbers with the minutes they represent.
    Fix: Practice counting around the clock by fives and always remember that the number tells you how many five-minute groups have passed.
  • Mistake: Counting by ones instead of fives around the clock.
    Why it happens: Some children find it easier to count by ones, especially if they're just learning numbers.
    Fix: Practice counting by fives in a circle. You can use your fingers or count objects to help.
  • Mistake: Confusing 12 o'clock with 60 minutes.
    Why it happens: The number 12 can be confusing because it's at the top of the clock.
    Fix: Remember that 12 means 0 minutes or 60 minutes (whichever way you're thinking about it).

Parent and carer guide

Helping your child understand why clocks count in fives is simple and fun:

  1. Use a real clock: Point to each number and say "five minutes, ten minutes, fifteen minutes" and so on.
  2. Play counting games: Count around the clock together, making it a game.
  3. Practice with time: Ask your child to show you 20 minutes, 35 minutes, etc. using a clock or drawing.
  4. Use everyday time: Talk about time in five-minute increments, like "We'll eat lunch in five minutes" or "It's ten minutes until bedtime."
  5. Be patient: This is a new way of thinking about time, so it takes practice.

What to watch for: Your child might still get confused when the minute hand is between numbers. That's okay! This is a more advanced skill.

Practice questions

  1. What number shows 25 minutes?
  2. What number shows 50 minutes?
  3. What time is it when the minute hand points to 4?
  4. What number shows 5 minutes?
  5. What time is it when the minute hand points to 11?
Answers:
  1. 5
  2. 10
  3. 20 minutes
  4. 1
  5. 55 minutes

FAQ

Why do clocks count in fives?

Clocks count in fives because a full circle has 60 minutes, and 60 divided by 12 equals 5. Each number on the clock face represents 5 minutes.

Can I count by fives on any clock?

Yes! Every analog clock counts by fives around the edge. This makes it easier to tell time quickly.

How can I practice counting by fives on a clock?

You can practice by drawing a clock face, pointing to each number, and saying the minutes out loud. You can also use a real clock and count along with the minute hand.

Is it harder to tell time with a clock that counts by fives?

No, it's actually easier! Counting by fives helps you read time faster than counting by ones. It's like learning a helpful shortcut.

What happens when the minute hand is between numbers?

When the minute hand is between numbers, you can estimate the time. For example, if it's between 2 and 3, it's between 10 and 15 minutes past the hour.