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These are 18 questions from the 2015 Key Stage 2 maths SAT – sat by children in year 6, who are 10 or 11 years old.
You think you're smarter than a 10-year-old? No calculators, please. (Also, the quiz lets you have multiple guesses at the same answer on some questions. But remember, if you do that, you're only cheating yourself.)