2013_Solutions_Grades 3-4-2013_Solutions_Levels

2013_Solutions_Levels_3&4
Pdf Summary
The Math Kangaroo 2013 suggested solutions for Levels 3 and 4 present the solutions to a series of mathematical problems. <br /><br />Problem 1 identifies Figure D as having five black kangaroos and four white kangaroos. Problem 2 involves a calculation using D, yielding the only correct result of 47 + 57 = 104. In Problem 3, a pattern is identified where after a set number of black circles, the same number of gray ones must follow, determining that the last four circles should be shaded gray.<br /><br />Problem 4 counts a total of ten triangles, comprised of eight small and two big ones. Problem 5 calculates the medal difference between the USA and China, concluding that USA's 104 medals are 16 more than China's 88. Problem 6 explains why option D is correct since 36 divided by 5 results in a leftover piece of candy.<br /><br />Problem 7 calculates the number of sandwiches that can be made with 60 slices of bread, concluding a total of 30 sandwiches. Problem 8 corrects Danya's mistake as one of the digits in 325 is not odd. Problem 9 determines shape B as having the proper angles to match the criteria.<br /><br />Problem 10 calculates the changes in the length of Pinocchio's nose, resulting in a final length of 23 cm. Problem 11 explains buying patterns to achieve exactly 48 oranges, requiring five boxes. Problem 12 determines Ann's path direction, while Problem 13 deduces birth months for a group of people based on given conditions.<br /><br />Problem 14 figures the overlap of participation in two contest events. Problem 15 identifies the correct piece fit. Subsequent problems involve calculations based on geometrical shapes, quantities, dates, and arrangements of items, utilizing logical deductions to arrive at solutions B, C, or D for the respective queries presented. <br /><br />The document serves as a detailed walkthrough for students in understanding how to approach and solve each problem correctly.
Keywords
Math Kangaroo 2013
Levels 3 and 4
mathematical problems
solutions
patterns
calculations
triangles
medals
shapes
logical deductions