Renert π Day challenge 2024

The finals will take place on Thursday, March 14 (Grades K-8), and Friday, March 15 (Grades 9-12) during your normal math class. Finalists will compete in a common area, with a teacher checking digits. To be a finalist, you must be in the top 5 of your grade (K through grade 6) or of Grade 7/8 or of Grades 9-12 during qualifiers the week before.

Rules:

• Be courteous and respectful. This is a fun event, and unkindness of any sort will not be tolerated.
• Students get 3 “strikes”: a strike only counts if the supervising teacher needs to stop the student and correct them. If the student catches themselves (“3.14159, 897 - I mean 26535”), then no problem. In light of this, teachers will not immediately react to correct and incorrect digits recited, and instead give a few seconds just in case.
• In the interest of time and getting things moving, students will have up to 30 seconds to continue recitation after a pause. After 30 seconds, a gentle encouragement to give their best guess will be given, otherwise it will count as a strike.
• We are going to be counting decimal digits, so that 3.14 will count as 2 (decimal) digits.

Prizes: To be determined

Note: all records are counting decimal digits, rather than digits - that is, digits after the decimal place. In this way, 3.141 counts as 3 “digits”.

2023 records:

• K: Nathan - 61
• Gr 1: Tuoli - 215
• Gr 2: Saanvi - 811
• Gr 3: Everett - 207
• Gr 4: Kian - 605
• Gr 5: Jonathan - 1205
• Gr 6: Jaiven - 787
• Gr 7-12: Matthew - 2860

2022 records:

• K: Soloman and Tuoli - 80
• Gr 1: Saanvi - 400
• Gr 2: Aarya - 300
• Gr 3: Kian - 335
• Gr 4: Jonathan - 800
• Gr 5: Jeffery - 585
• Gr 6: Elliot - 735
• Gr 7-12: Matthew - 2370

2021 records:

• K: Saanvi - 200
• Gr 1: Everett - 190
• Gr 2: Kian - 190
• Gr 3: Jonathan - 429
• Gr 4: Jeffrey - 505
• Gr 5: Indy - 460
• Gr 6: Matthew - 1176
• Gr 7-12: Aydin - 1001

2020 records:

• K - Gr 1: Basil - 95
• Gr 2-3: Jeffery - 259
• Gr 4-6: Jeena - 525
• Gr 7-12: Emiri - 379

All-time records:

• K: Saanvi - 200 (2021)
• Gr 1: Saanvi - 400 (2022)
• Gr 2: Saanvi - 811 (2023)
• Gr 3: Jonathan - 429 (2021)
• Gr 4: Jonathan - 800 (2022)
• Gr 5: Jonathan - 1205 (2023)
• Gr 6: Matthew - 1176 (2021)
• Gr 7-12: Matthew - 2860 (2023)

π digit sheets

• 100 digits, in groups of 5 and lines of 10
• 300 digits, in groups of 5 and lines of 25
• 1000 digits, in groups of 5 and lines of 50
• 2000 digits, in groups of 5 and lines of 50

Online links

• Listen to π here
• World record π computation (June 2022) - 100 trillion digits
• (old) World record π computation (August 2021) - 62.8 trillion digits
• pi.delivery - Created by Google, this website has lots of information and demos. You can also find the first 50 trillion (50 000 000 000 000) digits of π here!
• pi world record - A blog detailing the (old) world record computation (January 2019) of the digits of π (50 000 000 000 000).
• 1 million digits of π - As the title suggests, this is a website showing the first 1 million digits of π on a single page.