Units of Time

There are different units of time.

Second, minute, hour, day, week, month and year are the units of time.

These have the following relations between each:

60 seconds = 1 minute
         or
1 minute = 60 seconds


60 minutes = 1 hour
         or
1 hour = 60 minutes

24 hours = 1 day (day + night)

7 days = 1 week

12 months = 1 year

52 weeks = 1 year

365 days or 366 days make a year

10 years make a decade

50 years make half century

100 years make a century


These are the relations between units of time.


So far we have studied the clocks having two hands – an hour hand and a minute hand. Some clocks and watches have a thin and long hand which moves faster than the other two hands called the second hand.

Time in Seconds

The second hand moves round the clock face in one minute. That is, it covers 60 small divisions in one minute. The time taken by it to move from one small division to the next is one second.

Thus, 60 seconds = 1 minute


Note: Minutes and seconds are symbolically represented with a single and double strokes at the top right of the numbers.

20 minutes = 20’, 20 seconds = 20”

Related Concepts

Units for Measuring Length

Measuring Instruments

To Measure the Length of a Line-segment

Perimeter of a Figure

Unit of Mass or Weight

Examples on Unit of Mass or Weight

Units for The Measurement of Capacity

Examples on Measurement of Capacity

Measurement of Time

Read a Watch or a Clock

Antemeridian (a.m.) or Postmeridian (p.m.)

What Time it is?

Time in Hours and Minutes

24 Hour Clock

Units of Time

Examples Units of Time

Time Duration

Calendar

Reading and Interpreting a Calendar

Calendar Guides us to Know





4th Grade Math Activities

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