Measurement-Time

Measurement-Time

 

Units of Time: Here are the units that we use in our daily life to check the time.

 

 

 

Time Interval: Time interval is defined as period between two points of time.

For example: The time interval between 12 o’ clock and 1 o’clock is 1 hour.

     Conversion of Minutes into Hours: Follow the given steps

• Divide the number of minutes by 60
• Quotient defines the number of hours.
• The remainder is number of minutes.

 

For example:

 

     Conversion of Seconds into Minutes:

• Divide the number of seconds by 60.
• The quotient defines the number of minutes.
• The remainder defines the number of seconds greater than full minutes.

 

For example:

 

 

 

Addition and Subtraction of Time: Always add or subtract the hours, minutes and seconds separately. 

For example:

 

 

 

Exercise

 

• Convert following into hours:

1. 230 minutes
2. 346 minutes

• 198 minutes

 

• Convert following into minutes:

1. 240 seconds
2. 360 seconds

• 196 seconds

 

• Add the following:

1. 4 hrs 16 min and 6 hrs 20 min
2. 6 hrs 09 min and 7 hrs 19 min

• 2 hrs 18 min and 3 hrs 22 min

 

• Subtract the following:

1. 4 hrs 34 min from 6 hrs 44 min
2. 1 hrs 25 min from 4 hrs 13 min

• 3 hrs 44 min from 8 hrs 60 min

• Tell the time in the following watch:

             

 

                                                  Recap

• 1 minute = 60 seconds, 1 hour = 60 minutes and 1 day = 24 hours
• 1 day = 24 hours, 1 week = 7 days and 1 year = 12 months/ 365 days
• Calendar is a chart to represent the months, weeks and days.
• Leap Year has 366 days.