[GQ007]

Although this info is too late for the original poster as he is well underway with the test (hope all goes well) this may help future test takers

distance= speed X time is the basic formula

speed= distance/time and time= distance/speed are rearrangements to the basic formula similar to the way in which you can say 8=4X2...4=8/2...2=8/4

When multiplying by decimals or fractions in my head I find it easier to multiply by the whole number and then deal with the decimal for example 600 knots times 3.5 hours= 600x3= 1800 + 300 (.5x600 or half of 600) which will give you a distance of 2100. It may also be helpful to know the parts of an hour that are not commonly used like the back of your hand (e.g., a fifth of an hour is 12 minutes, a third is 20 minutes)

I know can get more complicated when dealing with tailwind/headwind components and climbing rates but once you have the basics down it's easy to build upon them