➕ 20-question maths quiz

Maths quiz for kids: 20 questions, instant feedback

Check your tables, fractions, percentages and shapes. Tap an answer to see at once whether you are right and why, then see your score.

Updated 21 October 2026. Every question is checked and every answer is explained.

How to play

Question 1 of 20

See all 20 questions and answers

What is 12 × 12? 144. 12 × 12 = 144.
What is 7 × 8? 56. 7 × 8 = 56.
What is 144 ÷ 12? 12. 12 × 12 = 144, so 144 ÷ 12 = 12.
What is 15% of 200? 30. 10% of 200 is 20 and 5% is 10, so 15% is 30.
What is 3/4 + 1/4? 1. Three quarters plus one quarter is a whole.
What is 9 squared (9²)? 81. 9 × 9 = 81.
What is the square root of 64? 8. 8 × 8 = 64.
What is 25 × 4? 100. Four quarters of 100 make 100.
What is 1000 − 357? 643. 1000 − 357 = 643.
What is the LCM (lowest common multiple) of 4 and 6? 12. 12 is the smallest number both 4 and 6 divide into.
What is the HCF (highest common factor) of 12 and 18? 6. 6 is the largest number that divides both 12 and 18.
What is 0.5 × 40? 20. Half of 40 is 20.
What is the next prime number after 7? 11. 9 and 10 are not prime. 11 is prime.
What is the perimeter of a square with sides of 6 cm? 24 cm. 4 sides × 6 cm = 24 cm.
What is the area of a rectangle that is 8 cm long and 5 cm wide? 40 cm². Area = length × width = 8 × 5 = 40 cm².
What is 2³? 8. 2 × 2 × 2 = 8.
What is 100 ÷ 8? 12.5. 8 × 12 = 96, and the remaining 4 is half of 8, so 12.5.
What is 5 + 3 × 2? 11. Multiply first (BODMAS): 3 × 2 = 6, then 5 + 6 = 11.
How many degrees do the angles of a triangle add up to? 180. The angles of any triangle add up to 180 degrees.
What is half of three quarters (1/2 of 3/4)? 3/8. Half of 3/4 is 3/8.

Keep going

More free practice

Quick-fire sums for kids and adults: add, subtract, multiply, divide, squares and percentages at four levels, with a 60-second sprint.

FAQ

How many questions are there?

Twenty, covering tables, fractions, percentages, squares, LCM, HCF and shapes.

What age is it for?

Ages 8 to 12.

Where can I practise more?

Try our free maths games, worksheets and the mental maths practice tool.

More fun

20-question GK quiz

14 number puzzles with answers

10 maths magic tricks

Start a conversation

Tell us the age, subject and what feels hard. We match a teacher from our network and confirm the format before anything is booked.

Play it, don't just read it

Free games that need no sign-up. Pick one and play for five minutes.