If each lower number, or denominator, is the same, you can order them like whole numbers, for instance 1/5, 3/5, and 8/5. Otherwise, you can alter your list of fractions to use the same denominator, without changing the size of any fraction.
Well, it is 9 months, but the average month is 4.3 weeks long, not 4. - (52 weeks / 12 months = 4.333 weeks per month.) - 4.333 weeks x 9 months = 38.99 weeks. So 9 months is just about the average of the 38 and 40 week numbers. To sum up, doctors talk about pregnancy on a 40 week timeline, the actual gestational time is about 38 weeks. All the being said, there are some variances in baby due date accuracy. Posted by Bill, almost a dad
This is how doctors determine your due date to give you an idea of when you can expect your baby to arrive. Most pregnancies last anywhere from 37 to 42 weeks with 40 weeks being the standard length of pregnancy. Once you hit the 37 week mark your baby is considered full term and safe for delivery at any time.