# Order Time in Seconds, Minutes and Hours

In this worksheet, students will be comparing time intervals in seconds, minutes, and hours using <, > and = signs. They will also be ordering times from earliest to latest.

Key stage:  KS 1

Curriculum topic:   Measurement

Curriculum subtopic:   Compare/Sequence Time Intervals

Difficulty level:

#### Worksheet Overview

In this activity, we will be comparing intervals of time using <, > and = signs and we will be ordering times from earliest to latest.

First of all, let's have a look at the different measurements of time.

The smallest measurement we will be looking at is seconds.

60 seconds makes one minute

60 minutes make one hour

24 hours make one day

Let's have a look at an example of comparing intervals of time using <, > and = signs:

Which sign is missing <, > or =?

30 minutes       30 seconds

Which unit of time is bigger? Minutes or seconds?

60 seconds makes one minute, so minutes are bigger.

30 minutes is bigger than 30 seconds, but which sign do we need to use?

We can think of these signs as a crocodile's open mouth where the hungry beast will eat the biggest number - so it needs to 'eat' 30 minutes.

30 minutes   >   30 seconds

This reads that 30 minutes is bigger than 30 seconds - we have chosen the bigger than sign.

Now, let's have a look at an example of ordering times from earliest to latest.

C

Let's start by reading the time on each clock:

A:  2 o'clock

B: 5 o'clock

C: 3 o'clock

So the earliest time will be 2 o'clock then 3 o'clock and then 5 o'clock.

Let's have a go at some questions!

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