Time and elapsed time

Reading analogue and digital clocks, and working out elapsed time. Read one part at a time and tap “I know this”. Then test yourself in the quiz.

Your progress0 of 3

Analogue and digital

On an analogue clock the short hand shows the hour and the long hand the minutes. For the long hand, each number is 5 minutes.
A digital clock shows the time in numbers: 07:45.
Quarter past 3 = 3:15; half past 3 = 3:30; quarter to 4 = 3:45.
In 24-hour time, 12:00 is noon and 00:00 is midnight.

Watch out

In Afrikaans half vier means 3:30 (half way to four). In English we say half past three.

Tap when you could tell someone without looking.

Count on in jumps: from 08:40 to 11:15 → 08:40 to 09:00 (20 min) → 09:00 to 11:00 (2 h) → 11:00 to 11:15 (15 min) = 2 h 35 min.

Unit	Equals
1 minute	60 seconds
1 hour	60 minutes
1 day	24 hours
1 week	7 days
1 year	12 months, about 52 weeks, 365 days (366 days in a leap year, when February has 29 days)

Tap when you could tell someone without looking.

A stopwatch measures how long something lasts, to the second: a race of 1 min 25 s.
Read a calendar: count the days, weeks and months between two dates.
1 year = 12 months; 1 decade = 10 years. From 2016 to 2026 is one decade.
Long ago people measured time with a sundial, an hourglass and a water clock.

Tap when you could tell someone without looking.

Remember this: your summary

Write these points in your book. Read them again the night before the test.

Memory trick

Jump to the whole hour, then hour by hour, then the rest.

Flash cards · Tap to turn over

First say the answer yourself, then turn the card over.

Test yourself · Part 2

Read the question and the answer. Is the answer right? Tap True or False.

Now the real quiz!

The quiz has many more questions on this topic. Every question shows straight away whether you are right and explains why.

For parents

Let your child work the examples on paper and explain them to you.
The ticks (“I know this”) are saved on this device only. We never ask for names or emails.

Follows CAPS for Grade 5 Mathematics. Always check your teacher’s notes and textbook too.