There are a few solutions to the first question in "What's in The Box".
One of the answers to the first question in "What's in The Box" is: 8 x 7 = 56, 8 x 3 = 24, 8 x 14 = 112 and 8 x 27 = 216
The answer to the second question is: 8.
The answer to the third question is: 11.
I worked out the first question's answer: by starting of with 2 (, to see if the number could be dived into the whole number to equal a whole number,) and went down the number line.
For question 2: I circled the Largest Common Factor of the 4 numbers.
For question 3: I remembered this tactic about how to find out quickly if the number is a multiple of 9/11. To find out if the number is a multiple of 9 you add all the digits of the number up if the total equals a multiple 9 then the number is the multiple of 9.
To find out if the number is a multiple of 11 you use that number you're multiplying 11 by and put the first digit of that number as the first digit if you look at the number from left to right.
e.g. 112 x 11 = 1_12
Then add all the digits together add put the total after the 1 if you're multiplying 11 by 112.
e.g. 112 x 11 = 1412