All of the box numbers are decide by the bottom numbers. Ex: 3+4=7, the top box is seven above 3 and 4. So you would add 16 and 17 which is 33. The answer is 33.
If you divide a fraction by another fraction, this is equivalent to mupltiplying by its inverse:
so

divided by

is equivalent to

multiplied by by
which is

so the answer is

which is also 0.5
The dot product will have you multiply the corresponding coordinates and add up the products
v dot w = (6*(-7)) + (7*5) + (-3*2)
v dot w = -42 + 35 - 6
v dot w = -7 - 6
v dot w = -13
Answer: -13
No. 0.54 is equal to 0.540
0.540 > 0.529