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

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.