The Sum Goblin: Percentages comic

LearnFun Comics#1
The Sum Goblin

The Sum Goblin

He only wants 20% of the gold. How bad could that be?

Starring Momo
Percentages ยท Class 5 and up

Treasure Town. Momo guards the vault.

Momo: One hundred gold coins. All counted. Nothing can go wrong today!

The Sum Goblin

Goblin: Relax! I only want 20% of them.

Momo: 20%? What does that little sign even mean?

The secret of the sign

% means โ€œout of 100โ€

20% = 20 out of every 100

Here are 100 coins. 20 are gone. That is 20%.

The Sum Goblin

Goblin: And when the vault holds 300 coins? Count THAT!

Momo: He takes 20 from every 100. And 300 has three hundreds.

3 hundreds ร— 20 = 60

So 20% of 300 = 60

Momo's shortcut

10% of 50 = 50 รท 10 = 5

20% is double that = 10

Momo: Find 10% first by dividing by 10. Then build almost anything from it!

Your turn, hero!

The Sum Goblin
The Sum Goblinโ™ฅโ™ฅโ™ฅ

The goblin grabs 25% of 80 coins. How many is that?

20. 25% is one quarter, and 80 รท 4 = 20.

The Sum Goblin

Goblin: Fine! Buy my โ‚น400 toy at 10% off. What a bargain!

A โ‚น400 toy at 10% off. What do you really pay?

โ‚น360. 10% of โ‚น400 is โ‚น40, and โ‚น400 โˆ’ โ‚น40 = โ‚น360.

The final battle

The Sum Goblin
The Sum Goblinโ™ฅโ™ฅโ™ฅ

His last trick: 15% of 200 coins. How many is that?

30. 10% of 200 is 20. 5% is half of that, 10. And 20 + 10 = 30.

The Sum Goblin

Goblin: You know what the sign means! My tricks are ruined!

Momo: Coins back in the vault, please.

That night, all 100 coins were safe. And the goblin was practising his sums.

The End?

Remember

  • % means โ€œout of 100โ€.
  • To find 10%, divide by 10.
  • Build the rest from 10%: double it for 20%, halve it for 5%.

But who taught the goblin his tricks? A note falls out of his pocket, signed with a crown...

A comic book about percentages. Learn what the % sign means, find 10% in your head and beat the goblin's three tricks.

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