Erasmus+ CLIL Math Riddles
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• Question 1
120 seconds
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Q.

Mikołaj’s riddle: Chris has his eyes covered. In front of the boy in the basket there are 7 red apples and 13 green apples. What minimum number of apples must Chris take to make sure that two of them are the same colour?

minimum 3 of apples.

minimum of 6 apples

minimum of 4 apples

minimum of 2 apples

• Question 2
30 seconds
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Q.

Krzysztof's riddle: Which of the actions is first: multiplication or division?

multiplication

division

• Question 3
60 seconds
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Q.

Kinga’s riddle: How many times can you subtract 5 from 25?

five times

twenty times

once

twice

• Question 4
120 seconds
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Q.

Amanda's riddle: The sum of three numbers is 42. The difference between the two smallest is 6, and their sum is 4/3 of the largest number. What three numbers meet these conditions?

9, 15, 18

10, 12, 20

7, 17, 18

9, 14, 19

• Question 5
60 seconds
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Q.

Tymon ’s riddle: How many nines are there between 1 and 100?

11

12

18

20

• Question 6
60 seconds
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Q.

Weronika’s riddle: At work, Max is to write numbers on houses on Flower Street. He has to prepare numbers from 1 to 100. How many times will he write the number 8?

twelve times

eleven times

twenty times

sixteen times

• Question 7
60 seconds
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Q.

Kacper’s riddle: Take two numbers, such that the square of the first, plus the square of the second, shall equal 8; while the first, plus the product of the first and second, shall equal 6. What are the two numbers?

2 and 3

3 and 4

2 and 2

3 and 3

• Question 8
60 seconds
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Q.

Igor’s riddle: Janusz found 20 pounds, but he has 30 now. How?

A minute later he borrowed 10 pounds from a friend.

He is a magician and turned twenty pounds into thirty pounds.

• Question 9
30 seconds
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Q.

Adam's riddle: What is heavier: a kilogram of feathers or a kilogram of apples?

a kilo of feathers

a kilo of apples

both weigh the same

• Question 10
60 seconds
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Q.

Szymon's riddle: Antek has 119 zlotys, Wiktor has 67 zlotys less than Antek, and Szymon has 5 times more than Wiktor.

How much money do boys have together?

312

171

431

454

• Question 11
30 seconds
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Q.

Bartek's question: What is the result of 2+2*2?