Mathematics Quiz

Practise arithmetic, algebra, geometry and number puzzles in a free maths quiz. Multiple-choice questions with answers and instant scoring.

The maths quiz tests mental arithmetic, percentages, fractions, algebra, geometry and number patterns. Every question has four options, so you can practise quick calculation and estimation the way aptitude tests expect.

How to play the Mathematics Quiz

1. Sign in and start the quiz. You get 15 random questions from a bank of 123.
2. Choose one of four options for each question, or skip it and move on.
3. Use lifelines when you are stuck: Hint, 50/50, Audience poll and Change question.
4. See your score at the end and find all your results in your profile.

Sample Mathematics questions with answers

1. What is 15% of 200?

   • 15
   • 20
   • 35
   • 30

   Answer: 30 - 200 × 15 / 100 = 30.

2. The product of two numbers is 180 and their HCF is 6. What is their LCM?

   • 60
   • 30
   • 36
   • 18

   Answer: 30 - HCF × LCM = product, so LCM = 180 / 6 = 30.

3. What is the sum of the first 10 natural numbers?

   • 50
   • 55
   • 100
   • 45

   Answer: 55 - n(n+1)/2 = 10 × 11 / 2 = 55.

4. The average of 5 numbers is 20. If one number is removed, the average becomes 18. What was the removed number?

   • 22
   • 28
   • 30
   • 20

   Answer: 28 - 5 × 20 = 100 and 4 × 18 = 72, so 100 − 72 = 28.

5. What is the perimeter of a square with side 9 cm?

   • 81 cm
   • 27 cm
   • 36 cm
   • 18 cm

   Answer: 36 cm - Perimeter = 4 × side.

6. If 3x + 5 = 20, what is x?

   • 8.33
   • 4
   • 5
   • 15

   Answer: 5 - 3x = 15, so x = 5.

7. Which Indian mathematician first set out rules for arithmetic with zero in the Brahmasphutasiddhanta?

   • Brahmagupta
   • Ramanujan
   • Aryabhata
   • Bhaskara II

   Answer: Brahmagupta - Brahmagupta wrote the Brahmasphutasiddhanta in 628 CE.

8. The metric prefix "atto-" makes a measurement how much smaller than the base unit?

   • One Billionth
   • One Quadrillionth
   • One Septillionth
   • One Quintillionth

   Answer: One Quintillionth

9. In a normal distribution, 95% of the data lies within how many standard deviations of the mean?

   • 2
   • 3
   • 1
   • 4

   Answer: 2

10. What are the first 6 digits of the number "Pi"?

    • 3.12423
    • 3.14159
    • 3.25812
    • 3.14169

    Answer: 3.14159

Frequently asked questions

How many questions are in the Mathematics Quiz?

Each round has 15 multiple-choice questions picked at random from 123 Mathematics questions, so every attempt is different.

Is the Mathematics Quiz free?

Yes, it is free to play. Sign in to start the quiz, and your scores are saved to your Thinkmad profile.

What lifelines can I use?

When you are stuck you can ask for a hint, use 50/50 to remove two wrong answers, check the audience poll, or change the question.

Can I see the correct answers?

Yes. After you answer, the quiz shows the correct option, and your final score lists how many answers were correct, wrong or skipped.