Escape from the Castle
For the first room we used our knowledge that two sides of the dice add up to a total of 7. We found three numbers from 1 to 6 that added up to 8. Some of us chose 3,3, and 2 and others 4,3 and 1. We subtracted these from 7 and added together out three new numbers to get a total of 13.
For the second room we had to use trial and improvement, finding pairs that add up to 13. We tried 6 and 7 which didn't work, then we went onto 8 and 5 that was successful. Other members of our group noticed that the middle had to be the smallest of the group. The number on the last card was 9.
Room 3 - we jotted down that the rectangle was 9cm by 5cm. Using this knowledge and the fact that the circles had a diameter of 5cm, we could work out that the gap on each side of the circles had to be 2.5cm. So then we subtracted these two distances (5cm) from 9cm to get 4cm. We squared this and took away one to get 15.
We found room 4 the hardest. We relied on trial and improvement. To help us we wrote down lots of combinations of 3 numbers from 1 to 8 that made 15. The highest numbers would need to be in different rows. The smaller numbers were generally in the middle of the rows. The corner boxes were 8,3,6 and 7 which added up to 24. We subtracted 10 to get an answer of 14.
For room 5 we had a number that would fit the five times table add 4 (9, 14, 19, 24, 29...) and the four times table add 3 (7, 11, 15, 19, 23...). 19 was in both lists so that must be the answer.
Using the code we had 5 numbers 13, 9, 15, 14, and 19. These gave us the letters M I O N S which is an anagram of SIMON, which is Skippy's real name.