The Sum Goblin: Percentages comic video

0:00 LearnFun Comics. The Sum Goblin. He only wants 20% of the gold. How bad could that be?

0:07 Treasure Town. Momo guards the vault.

0:10 One hundred gold coins. All counted. Nothing can go wrong today!

0:15 Relax! I only want 20% of them.

0:18 20%? What does that little sign even mean?

0:22 The secret of the sign

0:24 % means out of 100. 20% = 20 out of every 100

0:30 Here are 100 coins. 20 are gone. That is 20%.

0:35 Look. 20 squares out of 100 are shaded.

0:39 And when the vault holds 300 coins? Count THAT!

0:42 He takes 20 from every 100. And 300 has three hundreds.

0:47 3 hundreds × 20 = 60. So 20% of 300 = 60

0:53 Momo's shortcut

0:55 10% of 50 = 50 ÷ 10 = 5. 20% is double that = 10

1:03 Find 10% first by dividing by 10. Then build almost anything from it!

1:08 Your turn, hero! The goblin grabs 25% of 80 coins. How many is that? A: 16. B: 20. C: 25. D: 40

1:23 The answer is 20. 25% is one quarter, and 80 ÷ 4 = 20.

1:30 Fine! Buy my ₹400 toy at 10% off. What a bargain!

1:35 A ₹400 toy at 10% off. What do you really pay? A: ₹40. B: ₹360. C: ₹390. D: ₹410

1:54 The answer is ₹360. 10% of ₹400 is ₹40, and ₹400 − ₹40 = ₹360.

2:05 The final battle His last trick: 15% of 200 coins. How many is that? A: 15. B: 20. C: 30. D: 185

2:21 The answer is 30. 10% of 200 is 20. 5% is half of that, 10. And 20 + 10 = 30.

2:29 You know what the sign means! My tricks are ruined!

2:33 Coins back in the vault, please.

2:35 That night, all 100 coins were safe. And the goblin was practising his sums.

2:41 Remember. % means out of 100. To find 10%, divide by 10. Build the rest from 10%: double it for 20%, halve it for 5%.

2:53 But who taught the goblin his tricks? A note falls out of his pocket, signed with a crown...

2:59 Read this comic and answer the questions yourself, at learn fun dot in.