Answer:
Hat: 10 Pumpkin: 4 Ghost: 2 Cauldron: 8
Step-by-step explanation:
I started with the 4th row and tried to find the closest square root to 18 which was 16. 4x4=16, so in replaced the ghost with 2. I replaced all the pumpkins with 4. Then, I noticed that there were 2 cauldrons being multiplied, so, once again, I tried to find the closest square to 66, which is 64. 8x8=64 and the ghost is 2 so it worked. Then everything else was easy to fill in.
