proboblly 9 to 11/2 hours.
AnswerHe should probably get about 9-1/2 hours.As per:
http://www.webmd.com/parenting/guide/sleep-children
7-12 Years Old: 10 - 11 hours per day
At these ages, with social, school, and family activities, bedtimes gradually become later and later, with most 12-years-olds going to bed at about 9 p.m. There is still a wide range of bedtimes, from 7:30 to 10 p.m., as well as total sleep times, from 9 to 12 hours, although the average is only about 9 hours.
You will find all the sleep requirements for children from newborn to 18 years @ the above link as well.
Most kids around that age needs 9-11 hours sleep so one of my childen (9) goes to bed at 8:30pm-9:00pm, sleepovers, parties esc esc should be an exiting and special time to got to bed late. :)
Depends on when they have to get up. At this age they need at least 8 hours of sleep so retract that from the time they need to get up. I would also retract a extra hour in case they wan to read or something.
I'm pretty sure you mean what time should a nine year old go to bed, and 9yr olds should have from 8-9 hours of sleep so they should go to sleep around 8 or 9, it also depends on what time they have to wake up.
A 13 year old boy, needs at least 8 hours of sleep everyday. However, A 13 year old girl, needs about 9 hours of sleep.
8-10 hours no later than 9 o'clock bed time
This advice varies depending on who you ask, but I'd say about 9:00 p.m. on a school night and 9:30 p.m. on a weekend/holiday.
I think about 8 or 9 hours... that should be good enough.
if you mean how many hours you should sleep in a year it would be 3,650 hours of sleep for a regular year not a leap year
They should have 8 or more hours of sleep in a day.
A four year old should sleep 12 hours a day
A nine year should be getting 9-12 hours of sleep.
At least 8 hours of sleep.
At least 8 hours of sleep.
A ten year old should sleep at least 8 to 9 hours a day.
8 hours
A 5 year old should sleep around 10 to 11 hours and adults should sleep around 7-8 hours.
13 hours sleep per day?
A 17 year old man should have about 7.5-8 hours of sleep each night.
An 8 year old should get 8 hours of sleep because that's what a doctor would recommend