# Convert From Analogue to Digital Time including Quarter Past and Quarter To the Hour

In this worksheet, students will convert the time from analogue to digital time including quarter past and quarter to the hour.

Key stage:  KS 2

Curriculum topic:   Measurement

Curriculum subtopic:   Convert Analogue/Digital Time

Difficulty level:

#### Worksheet Overview

In this activity, we are going to be converting time from an analogue clock (12-hour clock) to a digital clock (24 hours).

Things we need to know:

There are 24 hours in one whole day.

Day and night are divided into a.m. (through the night from midnight until lunchtime) and p.m. (12 noon until midnight).

Digital clocks tell time over 24 hours from 00:00 to 23:59 - we often use digital clocks and watches to tell the time.

We add 12 hours to times after 12 noon (p.m.) to convert analogue time to digital.

When converting time from analogue to digital it is just the hours that change, the minutes will stay the same.

Here is an analogue clock:

2 a.m. (the middle of the night) is written as 02:00 on a digital clock.

Did you notice the colon symbol (:) between the digits?  We always include this.

2 p.m. (after lunch) is written 14:00 on a digital clock (2 + 12 = 14)

Here is a digital clock:

The 10 tells us that the hour is 10.  The 15 tells us the minutes (15 minutes past the hour).

The time is 10:15 a.m. (remember that times after 12:00 are p.m. times).

In the following questions, we are going to convert times at o'clock, half past, quarter to, and quarter past the hour.

Right, let's get started on the questions now!

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