Converting units of time
60 seconds = 1 minute
60 minutes = 1 hour
24 hours = 1 day
7 days = 1 week
12 months = 1 year
52 weeks – 1 year
364 days = 1
366 days = leap year
10 years= 1 decade
100 years = 1 century
1000 years = 1 millennium
Exercises
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Question 1 of 5
1. Question
Complete the following:

a) One millenium is years or centuries.
b) One century is years.
c) The smallest unit of time is .
d) Name one device used to tell time before our modern day clocks.
e) 60 seconds is minute.
f) minutes is 1 hour.
g) There is hours in a day.
h) There are days in a week.
i) There are months or weeks or days in a year. But days in a leap year.
j) there are years in one decade
Correct 14 / 14 PointsIncorrect / 14 Points 

Question 2 of 5
2. Question
Which clock is least accurate?
CorrectIncorrect 
Question 3 of 5
3. Question
Convert the time between hours and minutes.

1 hr = min
60 min = hr
3 hours = min
615 min = hr
24 hour = min
330 min = hr ⇐ answer with decimal
45 min = hr ⇐ answer with decimal
30 minutes = hours ⇐ answer with decimal
Correct 8 / 8 PointsIncorrect / 8 Points 

Question 4 of 5
4. Question
Match the following.

a) 4 minutes 20 seconds = sec + sec = sec
b) 1 day 25 minutes = min + min = min
c) 3 week 2 days 21 hours= hrs + hrs + hours = days
d) 1 month 2 weeks 2 days = days + days + days = days
Correct 14 / 14 PointsIncorrect / 14 Points 

Question 5 of 5
5. Question
Match the following.
Sort elements
 10 weeks
 5 years
 42 days
 6 centuries
 ½ century
 24 centuries
 540 months
 3 decades

1680 hours

60 months

6 weeks

600 years

5 decades

2400 years

45 years

360 months
Correct 8 / 8 PointsIncorrect / 8 Points