Đề thi Toán Canadian Math Kangaroo Contest Problems 2014 Khối 1-2

 CANADIAN MATH KANGAR OO CONTEST 
2014 Grade 1 and 2 Questions and Answers 
 Year 2014 
 Grade 1-2 2014 
5. Alan is five years old. His sister Bethany is seven years older than him. What 
 is the sum of their ages? 
 (A) 11 (B) 12 (C) 13 (D) 15 (E) 17 
6. What numbers of dots are hidden behind the cat and the dog in the equations? 
 + = 
 – = 
 (A) 8 and 2 (B) 9 and 2 (C) 9 and 3 (D) 8 and 3 (E) 7 and 4 
Part B: Each correct answer is worth 4 points 
7. The first two scales in the picture are balanced. How many ducks are needed 
 on the right side of the third scale, to balance with the crocodile? 
 (A) (B) (C) (D) (E) 
8. Which of the shapes below should be placed on top of the shape 
 to make a rectangle? 
 (A) (B) (C) 
 (D) (E) 
9. How many numbers between 10 and 31 (including 31) can be written using 
 only the digits 1, 2 and 3? You can repeat digits. 
 (A) 2 (B) 4 (C) 6 (D) 7 (E) 8 
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15. Fedya has 4 red cubes, 3 blue cubes, 2 green cubes, and 1 yellow cube. He is 
 building a tower (see the picture) in such a way that no two cubes touching 
 each other have the same colour. What is the colour of the cube with the 
 question mark? 
 (A) red (B) blue (C) green (D) yellow (E) impossible to determine 
16. Gear A is about to make one complete turn in the direction shown in Figure 1. 
 The piece “x” moved to one of the positions a, b, c, d, e shown in Figure 2. 
 To which position did “x” move? 
 (A) a (B) b (C) c (D) d (E) e 
17. How many triangles are there in the picture? 
 (A) 15 (B) 17 (C) 19 (D) 21 (E) 25 
18. John wrote the numbers 1, 2, 3, 4, 5, 6, 7, 8, 9 and 10 on a whiteboard. John 
 then erased some of the numbers and added up the remaining ones. He got 
 a sum of 24. At most how many numbers were left on the whiteboard? 
 (A) 3 (B) 4 (C) 5 (D) 6 (E) 7 
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