Learning IntentionLearning Intention Success CriteriaSuccess Criteria

2.2. Change from 24 to 12 Change from 24 to 12 hour clock.hour clock.

1. To revise Level D work on converting between 12 and 24 hr clock and vice versa.

Revision Level D

1.1. Change from 12 to 24 Change from 12 to 24 hour clock.hour clock.

Converting Converting TimeTime

2300230022002200210021002000200019019000

180018001700170016001600150015001400140013013000

12001200

11 11 pmpm

10 10 pmpm9 pm9 pm8 pm8 pm7 7

pmpm6 pm6 pm5 pm5 pm4 pm4 pm3 pm3 pm2 pm2 pm1 1 pmpmmiddaymidday

1100110010001000090009000800080007007000

060006000500050004000400030003000200020001001000

00000000

11 11 amam

10 10 amam9 am9 am8 am8 am7 am7 am6 am6 am5am5am4 am4 am3 am3 am2 am2 am1 1

amammidnighmidnigh

tt

12/24 Hour Clock

To go from 12 hour clock to 24 hour clock just add 12 to the pm hours:

2000 2100

1830 2330

1620

Examples

8 pm becomes

9 pm becomes

6:30 pm becomes

11:30 pm becomes

4:20 pm becomes

3:10 pm becomes

1510

2300230022002200210021002000200019019000

180018001700170016001600150015001400140013013000

12001200

11 11 pmpm

10 10 pmpm9 pm9 pm8 pm8 pm7 7

pmpm6 pm6 pm5 pm5 pm4 pm4 pm3 pm3 pm2 pm2 pm1 1 pmpmmiddaymidday

1100110010001000090009000800080007007000

060006000500050004000400030003000200020001001000

00000000

11 11 amam

10 10 amam9 am9 am8 am8 am7 am7 am6 am6 am5am5am4 am4 am3 am3 am2 am2 am1 1

amammidnighmidnigh

tt

12/24 Hour Clock

To go from 24 hour clock to 12 hour clock just subtract 12 from the hours if it is greater than 12:

8 pm 9 pm

5:30 pm 10:08 pm

8:06 pm

Examples

2000 becomes

2100 becomes

1730 becomes 2208 becomes

2006 becomes 1350 becomes 1:50 pm