SlideShare a Scribd company logo
TIME –
THE CALENDAR
TIME
ANALOGUE
Hands of the analogue clock
DIGITAL
FIVE O’CLOCK
“HALF PAST FIVE “ OR “FIVE – THIRTY”
SIX O’CLOCK
PROBLEMS
Display these times using analogue and
digital:
Half past ten Quarter past
one
Ten to eleven Three
O’clock
ADDING AND SUBTRACTING TIME
What is 2:45 + 1:10 ?
What is 2:45 + 1:20 ?
What is 4:10 - 1:05 ?
What is 4:10 - 1:35 ?
PROBLEMS
What is the time:
a) 20 minutes after 10.40 ?
b) 30 minutes before 8.40 ?
c) 10 minutes before 6.05 ?
d) 1.30 hours after 11.45 ?
24 - HOUR CLOCK
Morning times
0001 – 11 59 am (Ante Meridian))
Afternoon / evening times
CONVERTING FROM 24 HOUR CLOCK TO AM / PM
Converting from 24 hour clock to AM / PM
0000 to 0059 0100 to 1159 1200 to 1259 1300 to 2359
add 12 hours
straight
conversion to
AM
straight
conversion to PM
subtract 12
hours
EXAMPLES:
0000 --> 12
midnight
0015 --> 12:15
AM
0030 --> 12:30
AM
0059 --> 12:59
AM
EXAMPLES:
0100 --> 01:00
AM
0300 --> 03:00
AM
0700 --> 07:00
AM
0830 --> 08:30
AM
1000 --> 10:00
EXAMPLES:
1200 --> 12 noon
1215 --> 12:15
PM
1230 --> 12:30
PM
1259 --> 12:59
PM
EXAMPLES:
1300 --> 01:00
PM
1500 --> 03:00
PM
1800 --> 06:00
PM
2030 --> 08:30
PM
2215 --> 10:15
PROBLEMS
Change these 24-hour clock times to am/pm
time:
0945 1500 0430
1650 2020 0815
2330 1215 0020
PROBLEMS
Write these times using the 24-hour
clock:
1. Half past seven in the morning
2. Twenty to nine at night
3. Five to four in the afternoon
4. Quarter to four in the morning
5. Ten past eight at night
6. Twenty five past two in the
THE CALENDAR
LEAP YEARS
PROBLEMS
Which of these are leap
years?
2004 1967
1942 1900
2100 2000
MAIN TIME UNITS
1 second 1 week = 7 days 1 decade = 10years
1 minute = 60
seconds
1 month 1 century = 100
years
1 hour = 60 minutes 1 year 1 millennium = 1000
years
1 day = 24 hours
PROBLEMS
How many minutes are there in 3 hours?
How many hours are there in 2 days?
How many minutes are there in half an
hour?
How many months are there in 4 years?
How many decades are there in a

More Related Content

Viewers also liked

Weather and seasons
Weather and seasonsWeather and seasons
Weather and seasons
Zuly Ruiz
 
2.2 1,2,3 - Weather & Climate
2.2 1,2,3 - Weather & Climate2.2 1,2,3 - Weather & Climate
2.2 1,2,3 - Weather & Climate
Sandy Anthony
 
Coordinate+plane+practice
Coordinate+plane+practiceCoordinate+plane+practice
Coordinate+plane+practice
Alyssia
 
5th Gr Science Chapter 4: Our Dynamic Earth
5th Gr Science Chapter 4: Our Dynamic Earth5th Gr Science Chapter 4: Our Dynamic Earth
5th Gr Science Chapter 4: Our Dynamic Earth
eastmslibrary
 
The Secret Calendar Codes 2 of 7
The Secret Calendar Codes 2 of 7The Secret Calendar Codes 2 of 7
The Secret Calendar Codes 2 of 7
Caterina Schiavone
 
Dynamic earth ppt to go with notes
Dynamic earth ppt to go with notesDynamic earth ppt to go with notes
Dynamic earth ppt to go with notes
cbrannon
 
Ozone layer
Ozone layerOzone layer
Ozone layer
Pratik Jain
 
Earth Science 3.3 : Absolute Dating: A Measure of Time
Earth Science 3.3 : Absolute Dating: A Measure of TimeEarth Science 3.3 : Absolute Dating: A Measure of Time
Earth Science 3.3 : Absolute Dating: A Measure of Time
Chris Foltz
 
Geologic time (Earth Science)
Geologic time (Earth Science)Geologic time (Earth Science)
Geologic time (Earth Science)
Charisse Ann
 
Meteorological environment
Meteorological environmentMeteorological environment
Meteorological environment
Rupesh Sahu
 
Types of maps, long, lat, satellites, time zones
Types of maps, long, lat, satellites, time zonesTypes of maps, long, lat, satellites, time zones
Types of maps, long, lat, satellites, time zones
Bantay's Earth Science!
 
Greenhouse Gases and Global Warming
Greenhouse Gases and Global WarmingGreenhouse Gases and Global Warming
Greenhouse Gases and Global Warming
guestf307ffe
 
Atmosphere
AtmosphereAtmosphere
Atmosphere
Teach5ch
 
Time zones Introduction
Time zones Introduction Time zones Introduction
Time zones Introduction
EdTechonGC Mallett
 
World time zones
World time zonesWorld time zones
World time zones
nam2534
 
Earth Systems and Resources
Earth Systems and ResourcesEarth Systems and Resources
Earth Systems and Resources
dmcneeley
 
Rocks & minerals
Rocks & mineralsRocks & minerals
Rocks & minerals
lorizimmerman
 
Earths Structure
Earths StructureEarths Structure
Earths Structure
mungo13
 
STRUCTURE OF THE ATMOSPHERE
STRUCTURE OF THE ATMOSPHERESTRUCTURE OF THE ATMOSPHERE
STRUCTURE OF THE ATMOSPHERE
GeoCoops
 

Viewers also liked (19)

Weather and seasons
Weather and seasonsWeather and seasons
Weather and seasons
 
2.2 1,2,3 - Weather & Climate
2.2 1,2,3 - Weather & Climate2.2 1,2,3 - Weather & Climate
2.2 1,2,3 - Weather & Climate
 
Coordinate+plane+practice
Coordinate+plane+practiceCoordinate+plane+practice
Coordinate+plane+practice
 
5th Gr Science Chapter 4: Our Dynamic Earth
5th Gr Science Chapter 4: Our Dynamic Earth5th Gr Science Chapter 4: Our Dynamic Earth
5th Gr Science Chapter 4: Our Dynamic Earth
 
The Secret Calendar Codes 2 of 7
The Secret Calendar Codes 2 of 7The Secret Calendar Codes 2 of 7
The Secret Calendar Codes 2 of 7
 
Dynamic earth ppt to go with notes
Dynamic earth ppt to go with notesDynamic earth ppt to go with notes
Dynamic earth ppt to go with notes
 
Ozone layer
Ozone layerOzone layer
Ozone layer
 
Earth Science 3.3 : Absolute Dating: A Measure of Time
Earth Science 3.3 : Absolute Dating: A Measure of TimeEarth Science 3.3 : Absolute Dating: A Measure of Time
Earth Science 3.3 : Absolute Dating: A Measure of Time
 
Geologic time (Earth Science)
Geologic time (Earth Science)Geologic time (Earth Science)
Geologic time (Earth Science)
 
Meteorological environment
Meteorological environmentMeteorological environment
Meteorological environment
 
Types of maps, long, lat, satellites, time zones
Types of maps, long, lat, satellites, time zonesTypes of maps, long, lat, satellites, time zones
Types of maps, long, lat, satellites, time zones
 
Greenhouse Gases and Global Warming
Greenhouse Gases and Global WarmingGreenhouse Gases and Global Warming
Greenhouse Gases and Global Warming
 
Atmosphere
AtmosphereAtmosphere
Atmosphere
 
Time zones Introduction
Time zones Introduction Time zones Introduction
Time zones Introduction
 
World time zones
World time zonesWorld time zones
World time zones
 
Earth Systems and Resources
Earth Systems and ResourcesEarth Systems and Resources
Earth Systems and Resources
 
Rocks & minerals
Rocks & mineralsRocks & minerals
Rocks & minerals
 
Earths Structure
Earths StructureEarths Structure
Earths Structure
 
STRUCTURE OF THE ATMOSPHERE
STRUCTURE OF THE ATMOSPHERESTRUCTURE OF THE ATMOSPHERE
STRUCTURE OF THE ATMOSPHERE
 

Similar to Time the calendar

lesson for Grade 5 Quarter 3-W7-MATH-PPT (1).pptx
lesson for Grade 5  Quarter 3-W7-MATH-PPT (1).pptxlesson for Grade 5  Quarter 3-W7-MATH-PPT (1).pptx
lesson for Grade 5 Quarter 3-W7-MATH-PPT (1).pptx
ShirleyPicio3
 
Elapsed Time Worked Solutions
Elapsed Time Worked SolutionsElapsed Time Worked Solutions
Elapsed Time Worked Solutions
EdTechonGC Mallett
 
Beginners Time and Calender Week 9.pptx
Beginners Time and Calender Week 9.pptxBeginners Time and Calender Week 9.pptx
Beginners Time and Calender Week 9.pptx
AbbyXiong
 
Telling time in English
Telling time in EnglishTelling time in English
Telling time in English
Netzi Valdelomar Miranda
 
4 time
4 time4 time
4 time
MichaelR26
 
Telling time in english
Telling time in englishTelling time in english
Telling time in english
Netzi Valdelomar Miranda
 
Maths T5 W4
Maths T5 W4Maths T5 W4
Maths T5 W4
Katy Rickwood
 
184904079 what-time-is-it
184904079 what-time-is-it184904079 what-time-is-it
184904079 what-time-is-it
Milagritos Rivera
 
S.E.A Mathematics Reading time and the different types of clocks
S.E.A Mathematics Reading time and the different types of clocksS.E.A Mathematics Reading time and the different types of clocks
S.E.A Mathematics Reading time and the different types of clocks
MyrnellePhilip
 
All) telling time
All) telling timeAll) telling time
All) telling time
cristinaenrique
 

Similar to Time the calendar (10)

lesson for Grade 5 Quarter 3-W7-MATH-PPT (1).pptx
lesson for Grade 5  Quarter 3-W7-MATH-PPT (1).pptxlesson for Grade 5  Quarter 3-W7-MATH-PPT (1).pptx
lesson for Grade 5 Quarter 3-W7-MATH-PPT (1).pptx
 
Elapsed Time Worked Solutions
Elapsed Time Worked SolutionsElapsed Time Worked Solutions
Elapsed Time Worked Solutions
 
Beginners Time and Calender Week 9.pptx
Beginners Time and Calender Week 9.pptxBeginners Time and Calender Week 9.pptx
Beginners Time and Calender Week 9.pptx
 
Telling time in English
Telling time in EnglishTelling time in English
Telling time in English
 
4 time
4 time4 time
4 time
 
Telling time in english
Telling time in englishTelling time in english
Telling time in english
 
Maths T5 W4
Maths T5 W4Maths T5 W4
Maths T5 W4
 
184904079 what-time-is-it
184904079 what-time-is-it184904079 what-time-is-it
184904079 what-time-is-it
 
S.E.A Mathematics Reading time and the different types of clocks
S.E.A Mathematics Reading time and the different types of clocksS.E.A Mathematics Reading time and the different types of clocks
S.E.A Mathematics Reading time and the different types of clocks
 
All) telling time
All) telling timeAll) telling time
All) telling time
 

Recently uploaded

What is Digital Literacy? A guest blog from Andy McLaughlin, University of Ab...
What is Digital Literacy? A guest blog from Andy McLaughlin, University of Ab...What is Digital Literacy? A guest blog from Andy McLaughlin, University of Ab...
What is Digital Literacy? A guest blog from Andy McLaughlin, University of Ab...
GeorgeMilliken2
 
ANATOMY AND BIOMECHANICS OF HIP JOINT.pdf
ANATOMY AND BIOMECHANICS OF HIP JOINT.pdfANATOMY AND BIOMECHANICS OF HIP JOINT.pdf
ANATOMY AND BIOMECHANICS OF HIP JOINT.pdf
Priyankaranawat4
 
BÀI TẬP BỔ TRỢ TIẾNG ANH 8 CẢ NĂM - GLOBAL SUCCESS - NĂM HỌC 2023-2024 (CÓ FI...
BÀI TẬP BỔ TRỢ TIẾNG ANH 8 CẢ NĂM - GLOBAL SUCCESS - NĂM HỌC 2023-2024 (CÓ FI...BÀI TẬP BỔ TRỢ TIẾNG ANH 8 CẢ NĂM - GLOBAL SUCCESS - NĂM HỌC 2023-2024 (CÓ FI...
BÀI TẬP BỔ TRỢ TIẾNG ANH 8 CẢ NĂM - GLOBAL SUCCESS - NĂM HỌC 2023-2024 (CÓ FI...
Nguyen Thanh Tu Collection
 
Présentationvvvvvvvvvvvvvvvvvvvvvvvvvvvv2.pptx
Présentationvvvvvvvvvvvvvvvvvvvvvvvvvvvv2.pptxPrésentationvvvvvvvvvvvvvvvvvvvvvvvvvvvv2.pptx
Présentationvvvvvvvvvvvvvvvvvvvvvvvvvvvv2.pptx
siemaillard
 
writing about opinions about Australia the movie
writing about opinions about Australia the moviewriting about opinions about Australia the movie
writing about opinions about Australia the movie
Nicholas Montgomery
 
How to Create a More Engaging and Human Online Learning Experience
How to Create a More Engaging and Human Online Learning Experience How to Create a More Engaging and Human Online Learning Experience
How to Create a More Engaging and Human Online Learning Experience
Wahiba Chair Training & Consulting
 
Your Skill Boost Masterclass: Strategies for Effective Upskilling
Your Skill Boost Masterclass: Strategies for Effective UpskillingYour Skill Boost Masterclass: Strategies for Effective Upskilling
Your Skill Boost Masterclass: Strategies for Effective Upskilling
Excellence Foundation for South Sudan
 
Pengantar Penggunaan Flutter - Dart programming language1.pptx
Pengantar Penggunaan Flutter - Dart programming language1.pptxPengantar Penggunaan Flutter - Dart programming language1.pptx
Pengantar Penggunaan Flutter - Dart programming language1.pptx
Fajar Baskoro
 
Liberal Approach to the Study of Indian Politics.pdf
Liberal Approach to the Study of Indian Politics.pdfLiberal Approach to the Study of Indian Politics.pdf
Liberal Approach to the Study of Indian Politics.pdf
WaniBasim
 
South African Journal of Science: Writing with integrity workshop (2024)
South African Journal of Science: Writing with integrity workshop (2024)South African Journal of Science: Writing with integrity workshop (2024)
South African Journal of Science: Writing with integrity workshop (2024)
Academy of Science of South Africa
 
คำศัพท์ คำพื้นฐานการอ่าน ภาษาอังกฤษ ระดับชั้น ม.1
คำศัพท์ คำพื้นฐานการอ่าน ภาษาอังกฤษ ระดับชั้น ม.1คำศัพท์ คำพื้นฐานการอ่าน ภาษาอังกฤษ ระดับชั้น ม.1
คำศัพท์ คำพื้นฐานการอ่าน ภาษาอังกฤษ ระดับชั้น ม.1
สมใจ จันสุกสี
 
The Diamonds of 2023-2024 in the IGRA collection
The Diamonds of 2023-2024 in the IGRA collectionThe Diamonds of 2023-2024 in the IGRA collection
The Diamonds of 2023-2024 in the IGRA collection
Israel Genealogy Research Association
 
A Independência da América Espanhola LAPBOOK.pdf
A Independência da América Espanhola LAPBOOK.pdfA Independência da América Espanhola LAPBOOK.pdf
A Independência da América Espanhola LAPBOOK.pdf
Jean Carlos Nunes Paixão
 
LAND USE LAND COVER AND NDVI OF MIRZAPUR DISTRICT, UP
LAND USE LAND COVER AND NDVI OF MIRZAPUR DISTRICT, UPLAND USE LAND COVER AND NDVI OF MIRZAPUR DISTRICT, UP
LAND USE LAND COVER AND NDVI OF MIRZAPUR DISTRICT, UP
RAHUL
 
Digital Artefact 1 - Tiny Home Environmental Design
Digital Artefact 1 - Tiny Home Environmental DesignDigital Artefact 1 - Tiny Home Environmental Design
Digital Artefact 1 - Tiny Home Environmental Design
amberjdewit93
 
Beyond Degrees - Empowering the Workforce in the Context of Skills-First.pptx
Beyond Degrees - Empowering the Workforce in the Context of Skills-First.pptxBeyond Degrees - Empowering the Workforce in the Context of Skills-First.pptx
Beyond Degrees - Empowering the Workforce in the Context of Skills-First.pptx
EduSkills OECD
 
Walmart Business+ and Spark Good for Nonprofits.pdf
Walmart Business+ and Spark Good for Nonprofits.pdfWalmart Business+ and Spark Good for Nonprofits.pdf
Walmart Business+ and Spark Good for Nonprofits.pdf
TechSoup
 
Pollock and Snow "DEIA in the Scholarly Landscape, Session One: Setting Expec...
Pollock and Snow "DEIA in the Scholarly Landscape, Session One: Setting Expec...Pollock and Snow "DEIA in the Scholarly Landscape, Session One: Setting Expec...
Pollock and Snow "DEIA in the Scholarly Landscape, Session One: Setting Expec...
National Information Standards Organization (NISO)
 
The History of Stoke Newington Street Names
The History of Stoke Newington Street NamesThe History of Stoke Newington Street Names
The History of Stoke Newington Street Names
History of Stoke Newington
 
How to Setup Warehouse & Location in Odoo 17 Inventory
How to Setup Warehouse & Location in Odoo 17 InventoryHow to Setup Warehouse & Location in Odoo 17 Inventory
How to Setup Warehouse & Location in Odoo 17 Inventory
Celine George
 

Recently uploaded (20)

What is Digital Literacy? A guest blog from Andy McLaughlin, University of Ab...
What is Digital Literacy? A guest blog from Andy McLaughlin, University of Ab...What is Digital Literacy? A guest blog from Andy McLaughlin, University of Ab...
What is Digital Literacy? A guest blog from Andy McLaughlin, University of Ab...
 
ANATOMY AND BIOMECHANICS OF HIP JOINT.pdf
ANATOMY AND BIOMECHANICS OF HIP JOINT.pdfANATOMY AND BIOMECHANICS OF HIP JOINT.pdf
ANATOMY AND BIOMECHANICS OF HIP JOINT.pdf
 
BÀI TẬP BỔ TRỢ TIẾNG ANH 8 CẢ NĂM - GLOBAL SUCCESS - NĂM HỌC 2023-2024 (CÓ FI...
BÀI TẬP BỔ TRỢ TIẾNG ANH 8 CẢ NĂM - GLOBAL SUCCESS - NĂM HỌC 2023-2024 (CÓ FI...BÀI TẬP BỔ TRỢ TIẾNG ANH 8 CẢ NĂM - GLOBAL SUCCESS - NĂM HỌC 2023-2024 (CÓ FI...
BÀI TẬP BỔ TRỢ TIẾNG ANH 8 CẢ NĂM - GLOBAL SUCCESS - NĂM HỌC 2023-2024 (CÓ FI...
 
Présentationvvvvvvvvvvvvvvvvvvvvvvvvvvvv2.pptx
Présentationvvvvvvvvvvvvvvvvvvvvvvvvvvvv2.pptxPrésentationvvvvvvvvvvvvvvvvvvvvvvvvvvvv2.pptx
Présentationvvvvvvvvvvvvvvvvvvvvvvvvvvvv2.pptx
 
writing about opinions about Australia the movie
writing about opinions about Australia the moviewriting about opinions about Australia the movie
writing about opinions about Australia the movie
 
How to Create a More Engaging and Human Online Learning Experience
How to Create a More Engaging and Human Online Learning Experience How to Create a More Engaging and Human Online Learning Experience
How to Create a More Engaging and Human Online Learning Experience
 
Your Skill Boost Masterclass: Strategies for Effective Upskilling
Your Skill Boost Masterclass: Strategies for Effective UpskillingYour Skill Boost Masterclass: Strategies for Effective Upskilling
Your Skill Boost Masterclass: Strategies for Effective Upskilling
 
Pengantar Penggunaan Flutter - Dart programming language1.pptx
Pengantar Penggunaan Flutter - Dart programming language1.pptxPengantar Penggunaan Flutter - Dart programming language1.pptx
Pengantar Penggunaan Flutter - Dart programming language1.pptx
 
Liberal Approach to the Study of Indian Politics.pdf
Liberal Approach to the Study of Indian Politics.pdfLiberal Approach to the Study of Indian Politics.pdf
Liberal Approach to the Study of Indian Politics.pdf
 
South African Journal of Science: Writing with integrity workshop (2024)
South African Journal of Science: Writing with integrity workshop (2024)South African Journal of Science: Writing with integrity workshop (2024)
South African Journal of Science: Writing with integrity workshop (2024)
 
คำศัพท์ คำพื้นฐานการอ่าน ภาษาอังกฤษ ระดับชั้น ม.1
คำศัพท์ คำพื้นฐานการอ่าน ภาษาอังกฤษ ระดับชั้น ม.1คำศัพท์ คำพื้นฐานการอ่าน ภาษาอังกฤษ ระดับชั้น ม.1
คำศัพท์ คำพื้นฐานการอ่าน ภาษาอังกฤษ ระดับชั้น ม.1
 
The Diamonds of 2023-2024 in the IGRA collection
The Diamonds of 2023-2024 in the IGRA collectionThe Diamonds of 2023-2024 in the IGRA collection
The Diamonds of 2023-2024 in the IGRA collection
 
A Independência da América Espanhola LAPBOOK.pdf
A Independência da América Espanhola LAPBOOK.pdfA Independência da América Espanhola LAPBOOK.pdf
A Independência da América Espanhola LAPBOOK.pdf
 
LAND USE LAND COVER AND NDVI OF MIRZAPUR DISTRICT, UP
LAND USE LAND COVER AND NDVI OF MIRZAPUR DISTRICT, UPLAND USE LAND COVER AND NDVI OF MIRZAPUR DISTRICT, UP
LAND USE LAND COVER AND NDVI OF MIRZAPUR DISTRICT, UP
 
Digital Artefact 1 - Tiny Home Environmental Design
Digital Artefact 1 - Tiny Home Environmental DesignDigital Artefact 1 - Tiny Home Environmental Design
Digital Artefact 1 - Tiny Home Environmental Design
 
Beyond Degrees - Empowering the Workforce in the Context of Skills-First.pptx
Beyond Degrees - Empowering the Workforce in the Context of Skills-First.pptxBeyond Degrees - Empowering the Workforce in the Context of Skills-First.pptx
Beyond Degrees - Empowering the Workforce in the Context of Skills-First.pptx
 
Walmart Business+ and Spark Good for Nonprofits.pdf
Walmart Business+ and Spark Good for Nonprofits.pdfWalmart Business+ and Spark Good for Nonprofits.pdf
Walmart Business+ and Spark Good for Nonprofits.pdf
 
Pollock and Snow "DEIA in the Scholarly Landscape, Session One: Setting Expec...
Pollock and Snow "DEIA in the Scholarly Landscape, Session One: Setting Expec...Pollock and Snow "DEIA in the Scholarly Landscape, Session One: Setting Expec...
Pollock and Snow "DEIA in the Scholarly Landscape, Session One: Setting Expec...
 
The History of Stoke Newington Street Names
The History of Stoke Newington Street NamesThe History of Stoke Newington Street Names
The History of Stoke Newington Street Names
 
How to Setup Warehouse & Location in Odoo 17 Inventory
How to Setup Warehouse & Location in Odoo 17 InventoryHow to Setup Warehouse & Location in Odoo 17 Inventory
How to Setup Warehouse & Location in Odoo 17 Inventory
 

Time the calendar

  • 3. ANALOGUE Hands of the analogue clock
  • 6. “HALF PAST FIVE “ OR “FIVE – THIRTY”
  • 8. PROBLEMS Display these times using analogue and digital: Half past ten Quarter past one Ten to eleven Three O’clock
  • 9. ADDING AND SUBTRACTING TIME What is 2:45 + 1:10 ? What is 2:45 + 1:20 ? What is 4:10 - 1:05 ? What is 4:10 - 1:35 ?
  • 10. PROBLEMS What is the time: a) 20 minutes after 10.40 ? b) 30 minutes before 8.40 ? c) 10 minutes before 6.05 ? d) 1.30 hours after 11.45 ?
  • 11. 24 - HOUR CLOCK Morning times 0001 – 11 59 am (Ante Meridian)) Afternoon / evening times
  • 12. CONVERTING FROM 24 HOUR CLOCK TO AM / PM Converting from 24 hour clock to AM / PM 0000 to 0059 0100 to 1159 1200 to 1259 1300 to 2359 add 12 hours straight conversion to AM straight conversion to PM subtract 12 hours EXAMPLES: 0000 --> 12 midnight 0015 --> 12:15 AM 0030 --> 12:30 AM 0059 --> 12:59 AM EXAMPLES: 0100 --> 01:00 AM 0300 --> 03:00 AM 0700 --> 07:00 AM 0830 --> 08:30 AM 1000 --> 10:00 EXAMPLES: 1200 --> 12 noon 1215 --> 12:15 PM 1230 --> 12:30 PM 1259 --> 12:59 PM EXAMPLES: 1300 --> 01:00 PM 1500 --> 03:00 PM 1800 --> 06:00 PM 2030 --> 08:30 PM 2215 --> 10:15
  • 13. PROBLEMS Change these 24-hour clock times to am/pm time: 0945 1500 0430 1650 2020 0815 2330 1215 0020
  • 14. PROBLEMS Write these times using the 24-hour clock: 1. Half past seven in the morning 2. Twenty to nine at night 3. Five to four in the afternoon 4. Quarter to four in the morning 5. Ten past eight at night 6. Twenty five past two in the
  • 17. PROBLEMS Which of these are leap years? 2004 1967 1942 1900 2100 2000
  • 18. MAIN TIME UNITS 1 second 1 week = 7 days 1 decade = 10years 1 minute = 60 seconds 1 month 1 century = 100 years 1 hour = 60 minutes 1 year 1 millennium = 1000 years 1 day = 24 hours
  • 19. PROBLEMS How many minutes are there in 3 hours? How many hours are there in 2 days? How many minutes are there in half an hour? How many months are there in 4 years? How many decades are there in a