The English abbreviations of hours, minutes and seconds are: h, min, s. Hour is a unit of time, but it is not the basic unit of international system of units of time. The basic unit of international system of units of time is seconds.
Understand the unit conversion between hours, minutes and seconds: 1 hour =60 minutes, 1 minute =60 seconds. The title requires conversion from small units to large units, that is, from seconds to minutes and from minutes to hours, so you can know.
1 sec =60 sec ÷60= 1 min ÷ 60 = 1/60min, similarly,1min = 60min ÷60= 1 hr T
Time introduction:
One minute equals 60 seconds, and the progress rate of minutes and seconds is 60, so one minute equals 60 seconds. Then I will say that one year equals four seasons, one season equals three months, and one month equals 30 days.
One day is equal to 24 hours, one hour is equal to 60 minutes, and there are 365 days in a year, so if you calculate carefully, the maximum time for people to live in the world is more than 30 thousand days.