Castle 1: 13
We found the all the possible combanations on the top of the dice (that add to 8) and then using a die found out which numbers were at the bottom when a certain number was facing up. They always added up to 13 so this was the key number.
Castle 2: 9
After reading the question we came to the conclusion that the numbers on the hidden cards were 8, 5, 4, 7, 9 and we need the last number which is 9.
Castle: 15
The circles have a diameter of 5cm and to find the circumference you have to half the diameter that is 2.5cm. You then add both of the circumferences together which is 5 but the width is 9cm so 9- 5 is 4. We then have to square 4 and -1 to get the key number, 15.
Castle 4: 14
We did lots of combonations of these numbers and came to the conclusion that it would be: 8+1+6+2+7+5+3+4. The corner numbers would be 8, 6 , 7 and 3. Add them together and minus 10 is 14.
Castle 5: 19
We know the key number is 14 and the tray fills one but the no the other therefore there are over 14 pies but less than 28. We then experimented with numbers and discovered that the one number that fitted was 19 - our last key number.
The last task was not tricky as you just had to count 13 letters along the alphabet for castle 1, 9 letters for castle 2 using the pattern it says. We were left with
13=M
9=I
15=O
14=N
19=S
This is an anagram of Skippy's real name= Simon.