Wizarding math

Potion Mixing

Professor Snape asks you to mix a potion, but you need the right amount of ingredients. 
- You need 4 mandrake leaves for every bottle of potion.
- How many mandrake leaves do you need to make 7 bottles of potion?

Chocolate Frog Cards

Ron has been collecting Chocolate Frog cards. He has 53 cards, and Harry gives him 18 more.
- How many Chocolate Frog cards does Ron have now?

Magical Train Ride

The Hogwarts Express leaves King's Cross Station at 09:00 and travels for 4 hours to reach Hogwarts. 
- What time will the train arrive at Hogwarts?

Owl Deliveries 

Hermione has 12 letters she needs to send with Harry's owl, Hedwig. Hedwig can carry 3 letters at a time. 
- How many trips does Hedwig need to make to deliver all the letters?

Wizard Dueling Practice 

Harry is practicing dueling spells. He manages to cast 6 spells per minute.  
- How many spells can Harry cast in 10 minutes?

Magical Creature Feeding 

Hagrid is feeding his Blast-Ended Skrewts. He gives each Skrewt 5 pounds of food every day. If Hagrid has 8 Skrewts,  
- How many pounds of food does he need for all of them in 1 day?

Wand Shopping 

At Ollivander's Wand Shop, each wand costs 12 galleons.  
- If Hermione buys 3 wands, how many galleons will it cost her in total?

House Points 

During a Quidditch match, Gryffindor earns 120 points and Ravenclaw earns 85 points.  
- How many more points did Gryffindor score than Ravenclaw?

Potion Brewing Ingredients 

Professor Snape is preparing a complex potion. The recipe says you need (3 dragon scales + 5 phoenix feathers) + 2 drops of unicorn blood for each potion. 

• How many total ingredients are needed for two potions? 

Wizard Chess Tournament 

Ron is playing a wizard chess tournament. In the first round, he wins 5 matches. In the second round, he wins 3 times more matches than in the first round. In the third round, he wins 4 fewer matches than the second round. 

• How many matches did Ron win in total? 

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  (Hint: Use the formula: 5 + 5 × 3 + 5 × 3 – 4 Remember the order of operations (laskujärjestys)!