No pen and paper allowed.

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Get PremiumPeople who are amazingly fast at solving math problems in their heads might seem smarter than other people, but that's probably not true. With the help of some mental math tricks, and practice through quizzes like this one, you can do the same too.

Being able to calculate quickly in the head will not just help you in school but in everyday life as well. Calculators are awesome, but they're not always handy. More to the point, no one wants to be seen reaching for the calculator on their mobile phone when it's time to figure out a 15 percent gratuity.

Mental math isn't as difficult as it might sound, and you may be surprised at how easy it is to make seemingly impossible calculations without a calculator, pen and paper.

Have a go at this quiz and test your mental agility for the next 10 minutes. Try to solve these math problems using nothing but your beautiful brain and see if you can get a perfect score.