Wang Fang goes to bed at half past nine every night and gets up at six the next morning. Does Wang Fang have enough sleep time? Should I sleep for eight hours every day? How to write

Answer the idea:

Sleep for 2.5 hours at 9:30- 12:00 at night: 12:00-9:30=2.5 (hours);

I slept for 6 hours from 12:00 (that is, zero) at night to 6: 00:00+6:00=6 (hours) the next morning;

2.5+6=8.5 (hours)

Conclusion: Wang Fang should sleep eight hours every day, and she sleeps 8.5 hours, so she has plenty of sleep time.

Extended data

Transformation of time problem solving methods:

First of all, make it clear: one day =24 hours, 1 hour =60 minutes, when calculating:

Minutes plus minutes, MINUS 60 when 60 is full, and carry it for one hour;

Hours plus hours, if 24 is full, it will be the next day (minus 24), plus the rounded number of minutes.

Sleep time can be divided into intermittent sleep and continuous sleep. Sleep time in general life refers to the total sleep time in a day, that is, the sum of all the time in sleep. The human biological clock suggests sleeping before 22: 00 at night and getting up before 7: 00 in the morning. Going to bed early and getting up early can promote metabolism, enhance immunity, and help fight against virus invasion, thus improving work efficiency.