Time Flashcards
What is the 12 hour system of measuring time?
The first 12 hours is denoted as am
The next 12 hours is denoted as pm
The digit left of the decimal represent hours
The digit right of the decimal represents minutes
Example 2.25 am
6.22 pm
What is the 24 hour notation
One day has 24 hours, hence it is written in 4 digits
The first 2 digit represent the hours
The last 2 digits repesent the minutes
example 2325
What is wrong is stating the time as
2.65 pm?
As there is only 60 minutes in an hour, you cannot have a value larger than 60 to represent the minutes
It should be rewritten as 3.05 pm
How to we convert 12 hour am time to 24 hour clock?
2.35 am
If the hour is less than 10, we must add a 0 to the left and remove the decimal
2.35 am is 0235
How to we convert 12 hour am time to 24 hour clock?
11.35 am
If the hour is 10 or more, we must we just remove the decimal
11.35 am is 1135
How to we convert 12 hour pm time to 24 hour clock?
2.35 pm
We add 12 to the hours and remove the decimal place
2.35 pm is 1435
How to we convert 24 hour that is more than 1200 to 12 hour clock?
2125
We place a decimal between 2 and 3 digit and we subtract 12 from the hour and place the pm
2125 is 09.25 pm
How to we convert 24 hour that is less than 1200 to 12 hour clock?
0725
We place a decimal between 2 and 3 digit and we place the am
0725 is 07.25 am
Convert 2.40 am to 24 hour clock
0240
Convert 3.30 pm to 24 hour clock
1530
Convert 11.30 pm to 24 hour clock
2330
Convert 1020 to 12 hour clock
10.20 am
Convert 1820 to 12 hour clock
6.20 pm
