ASB Students Receive Medals at Math Challenge

Six ASB students received medals at Math Challenge VI, an annual international math competition involving more than 250 students from 35 schools and 11 nations.

Sihyum Lim won a gold medal for his sixth-place finish on the G8 individual exam. His teammate Panas Khongphattanayothin received a silver medal for placing in the top twenty. One ASB student, Misaki Obata, deserves special recognition for earning a bronze medal (top thirty) in the G7 division even though she is in sixth grade. ASB’s other bronze medalists were: Shuvan Sasidharan (G8); Ochirgardi Tugsbilguun (G7); and Yuka Kishi (G6). Other students who competed in the event were Shuban Sasidharan, Edward (Mason) Anthony, Thanat Ingkhasurawat, Sarawit (Reggie) Satirasatian, Yuri Kusanagi, and Hikaru Morita. Students prepared for the event with after-school group problem-solving meetings and solo study.

The event started Saturday morning, 25 Feb., at Pan-Asia International School (PAIS) and finished in the afternoon at King Mongkut’s Institute of Technology (KMIT).

The first round was a multiple choice exam with 40 problems. Points are awarded for correct answers and deducted for incorrect responses. Leaving an answer blank neither helps nor hurts the score. Therefore students must decide whether or not to risk answering a problem they might not be sure about.

To decide who qualifies for the final round, which is a live quiz show, students are grouped in teams of three and their exam points added together. Only the four highest scoring teams from each grade move on. Although none of the ASB teams made it that far, at least two of our four teams were within 10 points of qualifying.

To appreciate the difficulty of the problems and the skill required of the students who participated, consider solving any of these sixth-grade problems in 45 seconds with 500 people watching you:

  • What percent of ¼ is ⅕?
  • What is the maximum number of 2-cm.-diameter marbles that can fit in a rectangular prism with dimensions 16x18x10 cm.?
  • What are the last two digits of the square of the product of two consecutive integers if one of the integers ends in 5?
  • Someone makes a necklace using a repeating bead pattern of one black, two yellow, three blue, and four red. What color is the 1,452nd bead?

Congratulations to all of ASB's hard-working mathletes!