Not sure if this answers your question or not. As a RE you do phase 1 training which is normal 14 weeks and phase 2 is combat engineer training then phase 3/trade training.
At the ADSC you have to pass the maths test, the AFCO told me that everyone does this there but depending on the capbadge you're going for, you might not need to pass it but for RE you do. There trades within the RE that don't require qualifications and there are more that do. I'm going for Armoured engineer which doesn't require qualifications.
If it's action that you're after I'd say you'll definatley see it as the sappers often have to go in front of the front line to clear the way.