Older files are located below.
2018–2019 Season  
Mathira 2019  
Sipnayan 2018  
PMO 2018  
GMATIC 2018  Orals (Joshua Balete) 
The Grace Mathineers Interschool Competition is held in September. It is hosted by the Grace Mathineers, an organization of high schoolers in Grace Christian College, and is open to grades 7 to 12. Having started in 1991 makes it one of the longestrunning contests, second only to the PMO.
Students compete in teams of three. An individual written elimination round selects around ten teams. The final round is oral, split into rounds, questions from 20 to 60 seconds in length. GMATIC is known for its twists: in 2017 teams worked on Rubik’s Cubes and solved a polyomino puzzle, in 2016 each team selected powerups.
GMATIC usually has around 25 schools participating, each sending at most two teams. There are no registration fees and no prize money.
2018  Orals (Joshua Balete)  
2017  Reflections  All problems 
2016  Reflections  Orals 
In the GMATIC 2017 finals, teams did tasks like fitting polyominos into a grid.
Sipnayan (Filipino for “math”) is typically held in November, run by the Ateneo Mathematical Society of the Ateneo de Manila University. It has three divisions: elementary, junior high, and senior high. Sipnayan is heavily themed: 2017 was cartoons, 2016 was retro video games, 2015 was Inside Out.
Schools send at most three teams of three. An individual written elimination round selects 24 teams, split into two groups. Each group has a semifinal round of 15 questions, from 30 to 90 seconds in length. The top six teams make it to the finals.
Like GMATIC, Sipnayan is known for its finals mechanics, which change yearly. From 2015, teams selected the order the 20 finals questions appeared, each category of question having its own mechanics, based on the theme.
Around 60 teams participate in each division. There is prize money for the top three teams in the finals. The official page is AMS Sipnayan on Facebook.
2018  
2017  Reflections  
2016  Reflections 
Junior High Orals (Joshua Balete) Senior High Orals (Joshua Balete) 
2015 
Junior High Orals (Joshua Balete) 

2014 
Eliminations (Joshua Balete) 

2013 
Eliminations (Joshua Balete) 

2012 
Eliminations (Joshua Balete) 

2011 
Eliminations (Joshua Balete) 

2010 
Eliminations (Joshua Balete) 

2008 
Eliminations (Joshua Balete) 
The M meant the middle person of each team had to sit out in this question from Sipnayan 2016. Image: Irene Imperial
The Philippine Mathematical Olympiad is the country’s qualifier to the International Mathematical Olympiad. The IMO, being the world’s most prestigious high school math contest, makes the PMO the country’s most prestigious. It is also the oldest, starting in 1984.
Around 4000 high school students participate in a qualifying stage in October. The top 50 in each area (Luzon, Visayas, Mindanao, NCR) compete in an area stage in December, and the top 20 of the country make it to the nationals. Nationals are in January, split into the written round, a fourquestion olympiad, and an oral round.
The PMO is run by the Mathematical Society of the Philippines. The MSP invites the top 20, and others upon discretion, to take the APMO and participate in the MOSC, the selection program for the IMO.
The official website is pmo.ph, with past questions. Past national questions are also on AoPS, with discussion.
2019  
2018  Reflections  
2017  Reflections  
2016  Reflections  
2013 
Nationals (PMO) National orals (PMO) 

2011 
Qualifying (Answers) (PMO) Areas (PMO) National orals (PMO) 

2010 
Qualifying (PMO) Qualifying B (PMO) Nationals (PMO) 

2009  All problems (PMO)  
2008  All problems (PMO)  
1999  Individual finals (PMO) 
The written component of PMO 2017 Nationals. Image: Philippine Mathematical Olympiad.
Mathirang Mathibay is a pun on “matirang matibay”, survival of the fittest. The Mathematics Majors Circle of the Univeristy of the Philippines organizes Mathira around January. It is best known for aggressively eliminating teams throughout the oral round, and its large prize money, second only to MMC.
A school sends at most two teams of three high school students each. The mechanics changed most recently in 2016. The elimination round is by team, each team having a proctor. The proctor gives out questions every few minutes. Teams can attempt to answer a question any number of times, the point value decreasing as time passes.
Twentyfive teams qualify to the orals, split into tiers. In each tier the two lowestscoring teams are eliminated. The final four teams compete in a final round. Mathira questions are known for having absurdly fast time limits.
Around sixty teams participate yearly. The official page is MATHirang MATHibay on Facebook.
2019  
2018  Reflections 
Eliminations (Joshua Balete) Orals (Joshua Balete) 
2017  Reflections 
Eliminations (Joshua Balete) Orals (Joshua Balete) 
2016 
Orals (Joshua Balete) 

2012 
Eliminations (Joshua Balete) Orals (Joshua Balete) 

2011 
Eliminations (Joshua Balete) Orals (Joshua Balete) 

2010 
Eliminations (Joshua Balete) Orals (Joshua Balete) 

2009 
Orals (Joshua Balete) 
The tensecond timer in the background is meant for the next question. Image: MATHirang MATHibay.
The Metrobank–MTAP–DepEd Math Challenge is the largest among Philippine math competitions, the national round held in April. Spearheaded by the Mathematics Teachers Association of the Philippines and sponsored by Metrobank, MMC has the widest participation and the largest prize money.
Nationwide, the contest is for grades 6 and 10, with individual and team categories. Individually, the progression is school to region to nationals; teams progress from division to region to nationals. Individual rounds are written until nationals, which has an oral component. Team rounds are oral with questions from 15 to 60 seconds.
Historically the MMC was only run by MTAP, and only in NCR. People still call the contest MTAP out of habit, to the dismay of MMC. This also lead NCR to have different mechanics, as well as a competition for grades 1 to 5 and 7 to 9, without a national stage.
The official page is MMC (Metrobank–MTAP–Deped Math Challenge) on Facebook, with past national oral questions.
2017  
2016  
2015  Sectorals B 
The Grade 6 national individual orals in the MMC 2017. Image: Metrobank–MTAP–DepEd Math Challenge