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Are you smarter than a 15-year-old at math? Take our quiz

Sixty-five countries took part in the OECD's Programme for International Student Assessment. More than half a million 15-year-olds, including 21,000 Canadians, took the test, which measured their skills and knowledge in math, reading and science. Read more about Canada's PISA rankings here.

Test your math skills with the official questions below.

Note: problems have been edited from the original versions in some cases.

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