2011_Questions_Grades 9-10-2011_Questions_Levels

2011_Questions_Levels_9&10

Pdf Summary

The Math Kangaroo 2011 competition for levels 9 and 10 took place on March 17, 2011. It was an international mathematics competition organized by Kangourou Sans Frontieres and the Mathematics Promotion Society. Participants had 75 minutes to answer 30 questions without the use of calculators. Answers were recorded on a provided answer form. The questions are divided into three categories based on point value: 3-point, 4-point, and 5-point problems.<br /><br />The first part, 3-point problems, includes geometry and algebra-based questions. For example, the test requires calculating the width of a crosswalk made of stripes, determining the area of a trapezoid, and solving an algebraic expression for integers x, y, and z.<br /><br />The second part consists of 4-point problems, which present more complex logical reasoning and geometry tasks. This includes a question on determining the order of Formula 1 race competitors based on a given number of overtakes, and calculating the perimeter of a figure composed of polygons.<br /><br />The final section, 5-point problems, poses advanced mathematical challenges such as finding the number of 5-digit "good" numbers where the first digit is the sum of the rest, and solving a geometric problem involving cubes and transformations.<br /><br />Overall, the Math Kangaroo 2011 presents a broad range of mathematical challenges, testing problem-solving and logical reasoning abilities. Participants are required to work efficiently within the time limit, demonstrating their understanding of both basic and complex mathematical concepts.

Keywords

Math Kangaroo 2011

international mathematics competition

Kangourou Sans Frontieres

Mathematics Promotion Society

geometry

algebra

logical reasoning

problem-solving

mathematical challenges

time limit