1) How many galleons do Harry, Ron and Hermione have left after buying 500 galleons worth of products in Diagon Alley? Answer: 3500 galleons

2) How many pixies remain in Hagrid’s hut after 50 have escaped? Answer: 0 pixies

3) How many centaurs are left in the Forbidden Forest after Lord Voldemort has killed 400? Answer: 400 centaurs

4) How much money does Harry owe Hagrid after he bought 4,000 knuts worth of supplies? Answer: 0 knuts

5) How many dementors remain at the Hogwarts castle gates after the Order of the Phoenix has fended off 500 of them? Answer: 0 dementors

6) How many points does Gryffindor have left after Slytherin gains 200 points? Answer: 0 points

7) How many Mandrake Roots remain in Professor Sprout’s greenhouse after 15 have been pulled out? Answer: 0 Mandrake Roots

8) How many points is Hufflepuff behind Gryfddor after Gryffindor gains 500 points? Answer: 500 points

9) How much will Draco Malfoy owe Gringotts after he spends 10,000 galleons? Answer: 0 galleons

10) How many basilisks remain in the Chamber of Secrets after Voldemort releases 5 of them? Answer: 0 basilisks