Optiver Mental Maths Tool

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Authentic Mode

The Optiver 80-in-8 Test requires you to answer 80 mental maths questions in 8 minutes. Correct answers gain a point, and incorrect answers lose a point. To be competitive in the application process, we recommend you achieve at least 70 points.

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Decimal Mode

Practice decimal questions that may appear in the Optiver 80-in-8 Test. Within the 3 minute timeframe, we recommend you achieve at least 25 points to master decimal questions.

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Integer Mode

Practice integer questions that may appear in the Optiver 80-in-8 Test. Within the 3 minute timeframe, we recommend you achieve at least 25 points to master integer questions.

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Fraction Mode

Practice fraction questions that may appear in the Optiver 80-in-8 Test. Within the 3 minute timeframe, we recommend you achieve at least 25 points to master fraction questions.

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Zen Mode

Want to practice without any time pressures? Zen mode allows you to relax, turn some music on, and answer questions at your own pace.

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