I got them right, but then I enjoy math (not that I'm an expert).
My grandson used to be quite poor at math and because of this he just concluded he was no good at it so I think he even stopped trying. Recently he has been accompanting me to the workshop at weekends and I've been able to show him the practical uses for maths in working things out and measuring. Relatively simple stuff but it has given him a much needed confidence boost and improved his ability no end.
I think his lack of ability just might have something to do with the way he is taught at school.
BTW. the first question on the Sky News page is simplicity itself. Think about it. If the answer has got to be 100 then the last digit of the two numbers you are looking for must add up to 10. That is the 4 and the 6. It then becomes quite easy to figure out where the 2 and the 7 should fit.
regards
Brian