Chapter 7 Time 7A3: Converting time units 1 day = 24 hours 1 hour = 60 minutes 1 minute = 60 seconds × 60 × 24 × 60 D H M S number of days number of hours number of minutes number of seconds ÷24 ÷60 ÷60 You may use a calculator to answer the following questions. 1 How many minutes in 15 hours? 2 How many hours in 720 minutes? 3 How many minutes in 13.75 hours? How many hours in 6 days? 4 How many hours in 330 minutes? 6 How many days in 1440 hours? 8 How many days in 36 hours? 9 How many hours in the month of June? How many seconds in 30 minutes? 10 11 How many seconds in 1 week? 12 13 How many seconds in 1 year? 14 How many minutes in 195 seconds? How many hours in 10 000 seconds? How many days in 1 million seconds? 5 7 © Palmer et al. 2016 1