Mental Maths
Answer as many questions as you can in 120 seconds. The questions are set by your rating.
Each question is shown on screen.
Example questions at your new rating:
Your rating, how much it changed and your slowest kind of question, by email each Monday. It is only sent for weeks in which you play.
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Free Quant Games is made by Quanteric, which coaches students through quant trading interviews. Applications for the next cohort open to the waitlist first.
Join the Quanteric WaitlistHow the Rating Works
Every question has a difficulty on the same scale as your rating. Your rating goes up when you answer a question faster than expected for its difficulty, and goes down when you answer more slowly or skip it.
The next question is picked near your current rating, so the questions get harder during a round as your rating rises. A new player starts at 800. At a rating of 1150, a question such as 47 × 6 takes about six seconds.
Fractions
Questions with fractions appear from a rating of about 1100. A fraction answer must be in lowest terms, so 3/4 is accepted and 6/8 is not. Answers above 1 are written as improper fractions, such as 7/4. A decimal is also accepted when it is exact, such as 0.75 for 3/4.
Listen Mode
In Listen mode each question is spoken and not shown, as it is when an interviewer reads a question out. Listen mode has its own rating. Press R or Repeat to hear a question again.
Your Data
Your rating is kept in this browser. No account or email is needed to play. See the privacy page for what is recorded.