Maths quiz questions

GK by subject Updated 11 Oct 2026

These maths quiz questions cover everything from class 3 to class 5 basics to the arithmetic asked in SSC, bank and state exams. Each question has four options, one correct answer and a short explanation that shows the working step by step.

The quiz is split into sections on basic arithmetic, fractions and decimals, percentages and ratios, geometry and mensuration, the number system and word problems. Start with the section that matches your level, solve on paper first, and then check your answer against the explanation.

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Basic maths questions (class 3 to 5)

Q1. What is 456 + 278?
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Answer: D. 734
Add the ones (6 + 8 = 14, carry 1), then tens (5 + 7 + 1 = 13, carry 1), then hundreds (4 + 2 + 1 = 7) to get 734.
Q2. What is 1000 - 387?
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Answer: C. 613
1000 - 387 = 613. Check: 613 + 387 = 1000.
Q3. What is 25 x 16?
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Answer: B. 400
25 x 16 = 25 x 4 x 4 = 100 x 4 = 400.
Q4. What is 864 divided by 8?
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Answer: A. 108
864 / 8: 8 hundreds / 8 = 100 and 64 / 8 = 8, so the answer is 108.
Q5. What is 7 x 8 + 6?
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Answer: D. 62
Multiplication comes before addition: 7 x 8 = 56, then 56 + 6 = 62.
Q6. What is the value of 4 + 6 x 3?
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Answer: C. 22
By BODMAS, multiply first: 6 x 3 = 18, then 4 + 18 = 22.
Q7. What is 36 / (4 x 3)?
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Answer: A. 3
Solve the bracket first: 4 x 3 = 12, then 36 / 12 = 3.
Q8. How many minutes are there in 3 hours?
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Answer: B. 180
1 hour = 60 minutes, so 3 hours = 3 x 60 = 180 minutes.
Q9. What is the place value of 7 in 47,325?
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Answer: B. 7000
In 47,325 the digit 7 is in the thousands place, so its place value is 7 x 1000 = 7000.
Q10. Which is the smallest 4-digit number?
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Answer: C. 1000
The largest 3-digit number is 999, and 999 + 1 = 1000 is the smallest 4-digit number.
Q11. What is the Roman numeral for 49?
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Answer: D. XLIX
49 = 40 + 9, which is XL (50 - 10) followed by IX (10 - 1), giving XLIX.
Q12. How many days are there in 6 weeks?
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Answer: A. 42
1 week = 7 days, so 6 weeks = 6 x 7 = 42 days.

Fractions and decimals questions

Q13. What is 1/2 + 1/3?
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Answer: B. 5/6
Use the LCM 6: 1/2 = 3/6 and 1/3 = 2/6, so the sum is 5/6.
Q14. What is 3/4 x 8/9?
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Answer: A. 2/3
Multiply tops and bottoms: (3 x 8)/(4 x 9) = 24/36 = 2/3.
Q15. What is 5/6 divided by 5/12?
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Answer: D. 2
Dividing by a fraction means multiplying by its reciprocal: 5/6 x 12/5 = 2.
Q16. Which fraction is the largest?
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Answer: C. 5/6
With denominator 12: 3/4 = 9/12, 2/3 = 8/12, 5/6 = 10/12 and 7/12 stays 7/12, so 5/6 is the largest.
Q17. What is 0.6 x 0.4?
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Answer: C. 0.24
6 x 4 = 24, and there are 2 decimal places in total, so 0.6 x 0.4 = 0.24.
Q18. What is 2.5 + 3.75?
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Answer: A. 6.25
Line up the decimal points: 2.50 + 3.75 = 6.25.
Q19. What is 3/8 written as a decimal?
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Answer: D. 0.375
3 / 8 = 0.375, because 1/8 = 0.125 and 3 x 0.125 = 0.375.
Q20. What is the simplest form of 18/24?
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Answer: B. 3/4
The HCF of 18 and 24 is 6, and 18/6 = 3, 24/6 = 4, so 18/24 = 3/4.

Percentage, ratio and average questions

Q21. What is 20% of 450?
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Answer: A. 90
20% of 450 = 450 x 20/100 = 90.
Q22. 15 is what percent of 60?
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Answer: C. 25%
(15 / 60) x 100 = 25%.
Q23. A shirt costing Rs 800 is sold at a 15% discount. What is the selling price?
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Answer: B. Rs 680
Discount = 15% of 800 = Rs 120, so the selling price is 800 - 120 = Rs 680.
Q24. What is the average of 12, 15, 18, 21 and 24?
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Answer: D. 18
Sum = 90 and there are 5 numbers, so average = 90 / 5 = 18.
Q25. Divide Rs 560 between A and B in the ratio 3 : 5. What is B's share?
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Answer: D. Rs 350
Total parts = 3 + 5 = 8; one part = 560 / 8 = 70, so B gets 5 x 70 = Rs 350.
Q26. An article bought for Rs 400 is sold for Rs 500. What is the profit percent?
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Answer: C. 25%
Profit = 500 - 400 = Rs 100, and profit % = (100 / 400) x 100 = 25%.
Q27. What is the simple interest on Rs 5000 at 8% per annum for 3 years?
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Answer: A. Rs 1200
SI = P x R x T / 100 = 5000 x 8 x 3 / 100 = Rs 1200.
Q28. What is the compound interest on Rs 10,000 at 10% per annum for 2 years, compounded yearly?
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Answer: B. Rs 2100
Amount = 10000 x 1.1 x 1.1 = Rs 12,100, so CI = 12,100 - 10,000 = Rs 2100.
Q29. If 12 pens cost Rs 84, what do 5 pens cost?
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Answer: A. Rs 35
One pen costs 84 / 12 = Rs 7, so 5 pens cost 5 x 7 = Rs 35.

Geometry and mensuration questions

Q30. What is the perimeter of a rectangle 12 cm long and 7 cm wide?
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Answer: C. 38 cm
Perimeter = 2 x (length + breadth) = 2 x (12 + 7) = 38 cm.
Q31. What is the area of a square with side 9 cm?
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Answer: D. 81 sq cm
Area of a square = side x side = 9 x 9 = 81 sq cm.
Q32. What is the area of a triangle with base 10 cm and height 6 cm?
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Answer: B. 30 sq cm
Area of a triangle = 1/2 x base x height = 1/2 x 10 x 6 = 30 sq cm.
Q33. Two angles of a triangle are 65 degrees and 45 degrees. What is the third angle?
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Answer: A. 70 degrees
The angles of a triangle add up to 180 degrees, so the third angle is 180 - 110 = 70 degrees.
Q34. What is the volume of a cube with edge 4 cm?
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Answer: D. 64 cubic cm
Volume of a cube = edge x edge x edge = 4 x 4 x 4 = 64 cubic cm.
Q35. What is the circumference of a circle of radius 14 cm? (Take pi = 22/7)
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Answer: C. 88 cm
Circumference = 2 x pi x r = 2 x 22/7 x 14 = 88 cm.
Q36. What is the area of a circle of radius 7 cm? (Take pi = 22/7)
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Answer: B. 154 sq cm
Area = pi x r x r = 22/7 x 7 x 7 = 154 sq cm.
Q37. How many degrees are there in a right angle?
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Answer: B. 90
A right angle measures exactly 90 degrees, a quarter of a full turn of 360 degrees.
Q38. What is the sum of the interior angles of a hexagon?
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Answer: C. 720 degrees
Sum of interior angles = (n - 2) x 180; for n = 6 this is 4 x 180 = 720 degrees.
Q39. In a right-angled triangle the two shorter sides are 6 cm and 8 cm. How long is the hypotenuse?
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Answer: A. 10 cm
By Pythagoras, hypotenuse = square root of (36 + 64) = square root of 100 = 10 cm.

Number system and mental maths questions

Q40. What is the LCM of 12 and 18?
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Answer: D. 36
12 = 2 x 2 x 3 and 18 = 2 x 3 x 3; the LCM takes the highest powers: 2 x 2 x 3 x 3 = 36.
Q41. What is the HCF of 48 and 72?
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Answer: D. 24
48 = 24 x 2 and 72 = 24 x 3, so the highest common factor is 24.
Q42. Which of these is a prime number?
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Answer: B. 97
97 has no factor other than 1 and itself, while 91 = 7 x 13, 87 = 3 x 29 and 93 = 3 x 31.
Q43. What is the square root of 625?
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Answer: C. 25
25 x 25 = 625, so the square root of 625 is 25.
Q44. What is 15 squared?
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Answer: A. 225
15 x 15 = 225. Shortcut for numbers ending in 5: 1 x 2 = 2, then write 25 after it.
Q45. What is 2 raised to the power 10?
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Answer: B. 1024
2^10 = 2^5 x 2^5 = 32 x 32 = 1024.
Q46. How many prime numbers are there between 1 and 20?
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Answer: C. 8
The primes are 2, 3, 5, 7, 11, 13, 17 and 19, which makes 8.
Q47. Which number is divisible by 9?
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Answer: A. 4518
A number is divisible by 9 if its digit sum is; 4 + 5 + 1 + 8 = 18, which is divisible by 9.
Q48. What is the sum of the first 10 natural numbers?
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Answer: D. 55
Sum = n(n + 1)/2 = 10 x 11 / 2 = 55.
Q49. What is 99 x 99?
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Answer: C. 9801
99 x 99 = (100 - 1) x (100 - 1) = 10000 - 200 + 1 = 9801.
Q50. What is the cube of 6?
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Answer: B. 216
6 x 6 x 6 = 36 x 6 = 216.

Maths word problems (SSC and competitive level)

Q51. A train travels at 72 km/h. What is its speed in metres per second?
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Answer: A. 20 m/s
To convert km/h to m/s, multiply by 5/18: 72 x 5/18 = 20 m/s.
Q52. A car covers 240 km in 4 hours. What is its average speed?
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Answer: D. 60 km/h
Speed = distance / time = 240 / 4 = 60 km/h.
Q53. A can finish a job in 10 days and B in 15 days. In how many days can they finish it together?
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Answer: A. 6 days
Together they do 1/10 + 1/15 = 5/30 = 1/6 of the job per day, so they need 6 days.
Q54. The sum of two numbers is 50 and their difference is 14. What is the larger number?
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Answer: B. 32
Larger number = (sum + difference) / 2 = (50 + 14) / 2 = 32.
Q55. A father is 3 times as old as his son. After 12 years he will be twice as old. How old is the son now?
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Answer: C. 12 years
Let the son be x: 3x + 12 = 2(x + 12), so x = 12 years.

How to prepare

Treat these questions as practice, not just reading. Cover the options, work out the answer in your notebook, and only then compare. When you get one wrong, read the explanation and redo the sum without looking. Most mistakes in school tests and competitive exams come from skipped steps, not from not knowing the method.

Learn a few shortcuts that save time: tables up to 20, squares up to 30, the divisibility rules for 3, 4, 8, 9 and 11, the 5/18 rule for converting km/h to m/s, and the formula (sum + difference) / 2 for two numbers. For SSC CGL and similar exams, time yourself and aim to solve each simple arithmetic question in under 40 seconds.

Study tips

Write every step in your rough work so you can spot exactly where a mistake happened.
Revise multiplication tables and squares daily for five minutes to speed up mental maths.
After finishing a section, retry the questions you got wrong the next day without looking at the explanations.

Questions people ask

What topics do maths quiz questions usually cover?

Most maths quizzes cover arithmetic, fractions and decimals, percentages, ratios, geometry and simple word problems. Competitive exams like SSC CGL add speed, time and work, interest and the number system.

Are these maths questions suitable for class 3, 4 and 5?

Yes. The basic arithmetic and fractions sections are written at primary school level, and the explanations show each step so younger students can follow them with a parent or teacher.

How can I solve maths MCQ questions faster?

Learn tables, squares and divisibility rules by heart, and use the options: often you can rule out choices by checking the last digit or a rough estimate. Practise with a timer to build speed.

What is the BODMAS rule?

BODMAS gives the order of operations: Brackets, Orders (powers and roots), Division and Multiplication, then Addition and Subtraction. For example, 4 + 6 x 3 is 22, not 30, because multiplication is done first.

Do these questions help with SSC and TNPSC maths?

Yes. The percentage, interest, speed and work questions follow the pattern used in SSC, TNPSC and bank exams. Practise them along with previous year papers for the best results.

Every question on this page is written and fact-checked by the GK Quizzes team. Spotted a mistake? Tell us and we will fix it. How we make our questions.