# Tutorial: CXC CSEC math topic - Combination questions

1. Math word problens.
This site has a good range of math word problems that will give you practice for the CXC math paper 2 type of questions.

Fivestar

guest (not verified) 27 May 2009 - 2:11pm

### Physics And Biology

those two subjects were among the best that i have done so far wouldn't you agree.

guest (not verified) 27 May 2009 - 6:11pm

Can any body highlight the average scores(%) for each grades?What's the % range for a distinction,grade 1,2,3,etc.

~**~C-SEC Student in Guyana~**~

jboy213 (not verified) 27 May 2009 - 7:50pm

In reply to by guest (not verified)

### ITS A CURVE

Well, I don't know an exact average since it depends on the performance of students in the year. But just to be on the safe side of gaining a distinction/one aim for 75 percent and above.
With that you can't really go wrong in getting that much. People got to do real good for that not be worth a one.

Roxxie (not verified) 27 May 2009 - 8:36pm

In reply to by guest (not verified)

I'm also from Guyana and for grade
1=80-100%
2=65-79%
3=55-64%
4=45-54%
5=30-44%
6=below 30%

sheries (not verified) 27 May 2009 - 9:01pm

### bio

bio was a lot easier than i expected. hope everyone gets a one.

guest (not verified) 27 May 2009 - 11:38pm

In reply to by sheries (not verified)

### ok

oh really bio is easy

Amy (not verified) 28 May 2009 - 10:13am

### Sleep

According to wikipedia answer at www.wikipedia.org/sleep as indicated below, an adolescents should have atleast 9-10 hours of sleep to be healthy. Please tell me how many hours I need to sleep before being active again.
Age and condition Average amount of sleep per day
Newborn up to 18 hours
1â€“12 months 14â€“18 hours
1â€“3 years 12â€“15 hours
3â€“5 years 11â€“13 hours
5â€“12 years 9â€“11 hours
Adults, including elderly 7â€“8 (+) hours
Pregnant women 8 (+) hours

Susan Singh (not verified) 28 May 2009 - 1:11pm

In reply to by Amy (not verified)

### Re: Sleep

This is a very interesting topic. Most students spend endless hours on their books without getting the proper amount of sleep. Can anyone be kind enough to out a medical research which proves the ideal amount of rest for a teenager (12 or 13 to 19 years)

guest (not verified) 28 May 2009 - 3:05pm

In reply to by Susan Singh (not verified)

### Sleep is important

Sasha Rodney (not verified) 9 June 2009 - 9:18am

### Entering 4th Form

I'll be entering the 4th Form come September, 2009, and plans to visit this site very often.