Time and Money Flashcards
Practice (21 cards)
What is the duration of a full day?
24 hours
How many numerals does a clock face have?
12 numerals
What are the two parts of the full day in a 12-hour clock system?
a.m. (ante meridiem) and p.m. (post meridiem)
When does a.m. start and end?
Starts at 12:00 midnight and ends at 12:00 midday
When does p.m. start and end?
Starts at 12:00 midday and ends at 12:00 midnight
How is 12 o’clock midnight expressed in a 24-hour clock?
00:00 hours or 24:00 hours
How is 12 o’clock noon expressed in a 24-hour clock?
12:00 hours
Do we use a.m. or p.m. in a 24-hour clock system?
No
How do you convert a 12-hour time before 1:00 p.m. into a 24-hour format?
Keep the same time (e.g., 6:30 a.m. = 06:30 hours)
How do you convert a 12-hour time beyond 1:00 p.m. into a 24-hour format?
Add 12 to the hours (e.g., 5:00 p.m. = 17:00 hours)
How do you convert a 24-hour time if it is less than 12?
Keep the same time and use a.m. (e.g., 03:00 hours = 3:00 a.m.)
How do you convert a 24-hour time if it is more than 12?
Subtract 12 from the hours and use p.m. (e.g., 16:00 hours = 4:00 p.m.)
Convert 22:05 hours to a 12-hour format.
10:05 p.m.
Convert 18:15 hours to a 12-hour format.
6:15 p.m.
Convert 04:19 hours to a 12-hour format.
4:19 a.m.
Convert 07:14 hours to a 12-hour format.
7:14 a.m.
How do you convert hours to minutes?
Multiply by 60
How do you convert minutes to hours?
Divide by 60
How do you convert minutes to seconds?
Multiply by 60
How do you convert seconds to minutes?
Divide by 60
How many minutes are there in 3 hours 45 minutes?
225 minutes
