Đề thi Toán Kangaroo năm 2018 Cấp độ Minor, Khối 3-4

 Lietuvos Respublikos §svietimo ir mokslo ministerija Vilniaus universitetas
19. The band shown in the drawing can be fastened in ve ways.
 Keng©uros konkurso organizavimo komitetas Lietuvos matematikudraugija
 Unfastened belt Band fastened in the rst hole
 KANGAROO 2018
 2 cm
 How much longer is the band fastened in the rst hole than the band fastened
 in the fth hole?
 A) 4 cm B) 8 cm C) 10 cm D) 16 cm E) 20 cm
 Time allowed: 75 minutes Minor
20. In an ancient language the symbols , , , , Calculators are not permitted 3--4 grades
 represent the following numbers: 1, 2, 3, 4, and 5. Nobody knows Questions for 3 points
 which symbol represents which number. We know that:
 1. Leonie has 10 rubber stamps. Each stamp 1 5 0 3 2 0 1 8
 has one of the digits: 0, 1, 2, 3, 4, 5, 6, 7, 8
 + = + = + =
 and 9. She prints the date of the Kangaroo contest. How many stamps does she
 use?
 Which symbol represents the number 3? A) 5 B) 6 C) 7 D) 9 E) 10
 A) B) C) D) E)
 2. The picture shows 3 ying arrows and 9 xed
 balloons. When an arrow hits a balloon, it
21. Jumper the kangaroo is jumping only 2 m long and moves according to the bursts, and the arrow ies further in the same
 following rule: after every three jumps forward, he makes one jump back. He direction. How many balloons will be hit by
 defeated a certain route, thus making a total of fourteen jumps. How many the arrows?
 meters did this route count?
 A) 2 B) 3 C) 4 D) 5 E) 6
 A) 8 B) 16 C) 15 D) 24 E) 10
 22. The large rectangle is made up of a number of squares of 3. Susan is 6 years old. Her sister is two years younger and her brother is two years
 various sizes. The 3 small squares each have an area of 1. older. What is the sum of the ages of the three siblings?
 What is the area of the large rectangle? A) 10 B) 15 C) 18 D) 21 E) 30
 A) 165 B) 176 C) 187 D) 198 E) 200 4
 3
23. A two-digit number is given. If we add 11 to it, the result will be a three-digit 4. The picture shows ve screws in a block. Four screws are the same 2
 number. If we subtract 11 from it, then the result will be equal to the product length. One screw is shorter. Which screw is the shortest? 1 5
 of two equal one-digit numbers. The given two-digit number is A) 1 B) 2 C) 3 D) 4 E) 5
 A) 75. B) 81. C) 89. D) 90. E) 92.
 24. Loes wants to write the numbers from 1 to 7 in the grid shown. Two
 consecutive numbers can not be written in two neighbouring cells. 5. Here is Sophie the ladybird: . She turns around. Which picture of the
 Neighbouring cells meet at the edge or at a corner. What numbers ?
 can she write in the cell marked with a question mark? ladybirds below is not Sophie?
 A) Any of seven numbers B) Any odd number C) Any even number
 D) Only number 4 E) Only numbers 1 or 7
 
c 2018 Keng©uros konkurso organizavimo komitetas A) B) C) D) E)