Still Confused?

Try reviewing these fundamentals first

Still Confused?

Try reviewing these fundamentals first

Nope, got it.

That's the last lesson

Start now and get better maths marks!

Get Started NowStart now and get better maths marks!

Get Started NowStart now and get better maths marks!

Get Started NowStart now and get better maths marks!

Get Started Now- Intro Lesson: a7:13
- Intro Lesson: b5:46
- Intro Lesson: c5:46
- Intro Lesson: d7:03
- Lesson: 1a2:16
- Lesson: 1b2:12
- Lesson: 1c2:09
- Lesson: 1d2:33
- Lesson: 1e2:56
- Lesson: 2a3:06
- Lesson: 2b2:36
- Lesson: 2c2:43
- Lesson: 2d2:37
- Lesson: 2e3:04
- Lesson: 3a1:23
- Lesson: 3b2:16
- Lesson: 3c2:52
- Lesson: 47:56

In this lesson, we will learn:

- 24-hour clock time is used instead of 12-hour clock time to avoid being confused about AM or PM
- There are 24 hours in a day, so instead of the hours being labelled 1-12 AM or 1-12 PM, we can label them from 1-24 instead.
- There are rules for converting between 12-hour clock time and 24-hour clock time (and vice versa)

- Using
**12-hour clock time**can be__confusing__because you might not know if someone is telling you a time for AM or PM (ex. is it 6 o’clock in the morning or evening?) - By using
**24-hour clock time**, we can avoid the confusion of not knowing AM/PM - There are 24 hours in a day
- The previous days ends, and the new day starts at
**midnight**(12:00 AM) - The middle of the day is right at
**noon**(12:00 PM) - For
**24-hour time**, you say the hours directly from 00 until 24 (or back to 00)

- This table shows all the equivalent times for the
**12-hour clock**and**24-hour clock**:

- When it goes to midnight (12AM), it becomes 24:00 which is the same as 00:00
*Do not use this table when doing the practice questions; only for checking*

- To convert from
**AM/PM time (12-hour clock time)**to**24-hour time:** - if AM, keep the same (add leading 0)
- if PM add 12
- Ex. (8:46AM = 08:46), (5:13PM = 17:13), (12:07AM = 00:07)
- To convert from
**24-hour time**to**AM/PM time**: - if < 12, keep same, remove leading 0, and write AM
- if > 12 subtract 12 and write PM
- Ex. (09:54 = 9:54AM), (22:38 = 10:38PM), (00:16 = 12:16AM)

$\qquad$ 1. Minutes: stay the same

$\qquad$ 2. Hours:

$\qquad$ 3. Exceptions: 12AM = 00h, 12PM = 12h

$\qquad$ 4. Minutes: stay the same

$\qquad$ 5. Hours

$\qquad$ 6. Exceptions: 00:00 = 12AM and 12:00 = 12PM

- IntroductionIntroduction to Reading 24-Hour Clock Time:a)What is 24-hour clock time?b)Equivalent 24-hour times on the analog clockc)Comparing 12-hour times and 24-hour times in a tabled)How to convert between 12-hour clock time (AM/PM) and 24-hour clock time
- 1.
**Converting AM/PM Time into 24-Hour Time**

Write as 24-hour time instead of AM/PM time.a)9:56 AMb)6:18 AMc)1:35 PMd)4:27 PMe)12:01 AM - 2.
**Converting 24-Hour Time into AM/PM Time**

Write as AM/PM time instead of 24-hour time.a)05:40b)22:23c)18:05d)11:37e)00:51 - 3.
**Noon and Midnight are Special Exceptions for 24-Hour Time**

Answer the questions about special times in the day.a)How do you write noon and midnight in AM/PM time?b)How do you write noon and midnight in 24-hour time?c)What is the rule for all other time conversion (not noon or midnight) for AM and PM hours into 24-hour time? - 4.
**24-Hour Time - True False Questions**

Read the descriptions of the time shown below. Write true (T) or false (F) for each description.

19:45