# Converting Units of Time

1 minute = 60 seconds

1 hour = 60 minutes

1 day = 24 hours

1 week = 7 days

1 month = 30 days = 4 weeks (approximately)

1 year = 12 months = 365 days = 52 weeks (approximately)

1 decade = 10 years

1 century = 10 decades = 100 years

1 millennium = 100 decades = 1000 years

To convert a larger unit of time to a smaller unit of time, multiply.

To convert a smaller unit of time to a larger unit of time, divide.

**For example:** To find the number of minutes in 2 hours and 16 minutes,

first convert the hours into minutes by multiplying number of hours by 60.

2 × 60 = 120

So, 2 hours = 120 minutes

Now,

2 hours and 16 minutes = 120 minutes + 16 minutes = 136 minutes

So, there are** 136 minutes **in 2 hours and 16 minutes.

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### Help

The correct answer is

##### Remember :

The smallest number is the one that comes first while counting.

##### Solution :

To arrange the given numbers in order from smallest to greatest, find the smallest number among all the given numbers.

21,27,23

21 is the smallest number.