Metric & Customary Conversion • Topic 2 of 2

Converting Time - Hours & Minutes

Time Conversions:

Relation	Conversion
1 hour = 60 minutes	×60 or ÷60
1 minute = 60 seconds	×60 or ÷60
1 day = 24 hours	×24 or ÷24

Converting Hours to Minutes:

Hours → Minutes: multiply by 60
Example: 2.5 hours = 2.5 × 60 = 150 minutes

Converting Minutes to Hours:

Minutes → Hours: divide by 60
Example: 180 minutes = 180 ÷ 60 = 3 hours

Decimals vs. Minutes:

0.5 hour = ½ hour = 30 minutes
0.25 hour = ¼ hour = 15 minutes
0.75 hour = ¾ hour = 45 minutes

HOUR TO MINUTES CONVERSION:

    1 hour = 60 minutes
    
    0.25 hour (¼) = 15 minutes
    0.5 hour (½)  = 30 minutes
    0.75 hour (¾) = 45 minutes
    1.0 hour      = 60 minutes
    1.5 hours     = 90 minutes
    2.0 hours     = 120 minutes
    2.5 hours     = 150 minutes


TIME CONVERSION CLOCK:

           12
        11    1
      10        2
     9          3
      8        4
        7    5
           6
    
    Each number = 5 minutes
    Full circle = 60 minutes = 1 hour


CONVERTING 2.5 HOURS TO MINUTES:

    2.5 hours = 2 hours + 0.5 hours
               = (2 × 60) + (0.5 × 60)
               = 120 + 30
               = 150 minutes


CONVERTING 165 MINUTES TO HOURS:

    165 minutes ÷ 60 = 2.75 hours
    2.75 hours = 2 hours + 0.75 hours
               = 2 hours + 45 minutes
               = 2 hours 45 minutes

Solved Examples

Worked Example

Convert 3.5 hours to minutes

Solution

3.5 × 60 = 210
Answer: 210 minutes

Worked Example

Convert 240 minutes to hours

Solution

240 ÷ 60 = 4
Answer: 4 hours

Worked Example

How many minutes in 2¾ hours?

Solution

2 hours = 120 minutes
¾ hour = 45 minutes
Total = 120 + 45 = 165
Answer: 165 minutes

Worked Example

A movie is 150 minutes. How many hours is that?

Solution

150 ÷ 60 = 2.5
Answer: 2.5 hours (2 hours 30 minutes)

Key Points

Hours → Minutes: ×60
Minutes → Hours: ÷60
0.5 hour = 30 minutes
0.25 hour = 15 minutes
0.75 hour = 45 minutes

Quick Check — 4 MCQs

Tap an option to check your answer0 / 4

Q1.$1$ hour equals:

Explanation: $60$ minutes.

Q2.$1$ minute equals:

Explanation: $60$ seconds.

Q3.$2$ hours equals:

Explanation: $120$ minutes.

Q4.Half an hour is:

Explanation: $30$ minutes.

Practice more MCQs → 📝 Assignment · 35 marks