They are given formula for area and circumference of circles taking pi as 3.14. I think this is more to test their ability to use a formula than knowledge of pi, which is on the year 7/8 curriculum using calculators with pi to four places.
I have noticed some school tests have started assuming they know half base x perpendicular height.."what's perpendicular mean again mum"
for triangles though, whereas a few years ago that was always given too.
Most speed/distance/time problems are worded in a manner where the formula automatically applies itself as the child works through the problem if you get my drift.
Like 2013 says, learn the basics, but do not get them stressed about it....plenty of time for that in secondary school...Ds1 is currently being introduced to trig...remember thinking you would never ever remember that lot.