Medium Math & Logic Quiz Questions for Kids (with Answers)
Use this printable quiz list for classroom warm-ups, car trips, or revision. Tap any question to reveal the answer and a short explanation — then play the full math & logic quiz online with hints and stars.
Questions & answers
Tap a question to reveal the answer. 35 questions below.
1. What is 12 × 7?Show answer
- 74
- 82
- 84 — correct
- 94
12 × 7 = 84. Break it up: 10×7=70 and 2×7=14, total 84.
🧮 Distributing multiplication makes big problems easier!
2. What is 3/4 + 1/4?Show answer
- 1/2
- 1 — correct
- 4/8
- 2/4
3/4 + 1/4 = 4/4 = 1 whole.
🍕 When denominators match, add the tops and keep the bottom!
3. What is the area of a rectangle 5 cm long and 3 cm wide?Show answer
- 8 cm²
- 15 cm² — correct
- 16 cm²
- 30 cm²
Area = 5 × 3 = 15 square centimetres.
🏠 Floor plans use area to calculate how much carpet you need!
4. What is 144 ÷ 12?Show answer
- 10
- 11
- 12 — correct
- 14
144 ÷ 12 = 12. Note: 12 × 12 = 144.
📐 144 is called a gross — 12 dozen items!
5. What is 25% of 80?Show answer
- 15
- 20 — correct
- 25
- 40
25% of 80 = 80 ÷ 4 = 20.
🏷️ Sale signs use percentages — 25% off means you pay 75%!
6. What is the perimeter of a square with side length 6 cm?Show answer
- 12 cm
- 18 cm
- 24 cm — correct
- 36 cm
Perimeter = 4 × 6 = 24 cm.
🏃 Perimeter is the distance around a shape — like a fence length!
7. What is 2³ (2 to the power of 3)?Show answer
- 5
- 6
- 8 — correct
- 9
2³ = 2 × 2 × 2 = 8.
💻 Computers use powers of 2 because they work in binary!
8. If 3 notebooks cost £6, how much does 1 notebook cost?Show answer
- £1
- £2 — correct
- £3
- £18
£6 ÷ 3 = £2 per notebook.
🛒 Unit price helps compare products in shops!
9. What is the value of 4 + 3 × 2?Show answer
- 10 — correct
- 14
- 18
- 20
3 × 2 = 6 first, then 4 + 6 = 10. Order of operations matters!
📐 PEMDAS/BODMAS rules keep everyone getting the same answer!
10. Which number is prime?Show answer
- 9
- 13 — correct
- 15
- 21
13 is prime — its only factors are 1 and 13.
🔐 Prime numbers are key to internet encryption!
11. The sum of angles in a triangle is always 180°.Show answer
Answer: True
Interior angles of any triangle always add to 180 degrees.
📐 This fact is thousands of years old — known to ancient Greeks!
12. What is 0.5 as a fraction in simplest form?Show answer
- 1/4
- 1/2 — correct
- 1/3
- 2/5
0.5 = 5/10 = 1/2.
🔢 Decimals and fractions are two ways to write the same value!
13. A train leaves at 14:30 and travels 2 hours. What time does it arrive?Show answer
- 15:30
- 16:00
- 16:30 — correct
- 17:30
14:30 + 2 hours = 16:30 (4:30 PM).
🚂 Timetables use the 24-hour clock to avoid AM/PM confusion!
14. What is the greatest common factor (GCF) of 12 and 18?Show answer
- 3
- 6 — correct
- 9
- 36
6 is the largest number that divides both 12 and 18 evenly.
🧮 GCF helps simplify fractions!
15. What comes next: 3, 6, 12, 24, ?Show answer
- 36
- 42
- 48 — correct
- 72
Each term doubles: 24 × 2 = 48.
📈 Exponential growth doubles repeatedly — like bacteria splitting!
16. How many degrees in a right angle?Show answer
- 45°
- 90° — correct
- 180°
- 360°
A right angle measures exactly 90 degrees.
📐 The word 'rectangle' comes from 'right angle'!
17. What is 7/10 − 3/10?Show answer
- 1/5
- 2/5
- 4/10 — correct
- 10/10
7/10 − 3/10 = 4/10, which simplifies to 2/5.
🎯 Always simplify fractions when you can!
18. A bag has 3 red and 5 blue marbles. What is P(red)?Show answer
- 3/5
- 3/8 — correct
- 5/8
- 1/3
Probability = 3 red out of 8 total = 3/8.
🎲 Probability predicts how likely something is from 0 to 1!
19. What is the volume of a cube with edge 3 cm?Show answer
- 9 cm³
- 18 cm³
- 27 cm³ — correct
- 36 cm³
Volume = 3 × 3 × 3 = 27 cubic centimetres.
📦 Volume measures space inside 3D shapes!
20. Solve: x + 7 = 15Show answer
- 6
- 7
- 8 — correct
- 9
x = 15 − 7 = 8.
🔍 Algebra uses letters for unknown numbers — like a maths detective game!
21. What is 15% of 200?Show answer
- 20
- 25
- 30 — correct
- 35
10% of 200 = 20. 5% = 10. So 15% = 30.
💳 Tips and tax often use percentages!
22. How many lines of symmetry does a square have?Show answer
- 2
- 4 — correct
- 6
- 8
A square has 4 lines of symmetry.
🦋 Butterflies often have one line of symmetry!
23. What is 5/6 − 1/6?Show answer
- 1/3
- 2/3 — correct
- 4/6
- 1/2
5/6 − 1/6 = 4/6 = 2/3 in simplest form.
🍰 Fractions model sharing food fairly!
24. Convert 2.5 km to metres.Show answer
- 250 m
- 2500 m — correct
- 25,000 m
- 0.0025 m
1 km = 1000 m, so 2.5 km = 2500 m.
🏃 A 2.5 km run is a common school fitness distance!
25. What is the median of: 4, 7, 9, 12, 15?Show answer
- 7
- 9 — correct
- 10
- 12
The median is the middle number: 9.
📊 Median is useful when one extreme value skews the average!
26. If ○ + ○ + 5 = 17, what is ○?Show answer
- 5
- 6 — correct
- 7
- 8
Two circles sum to 12, so each circle = 6.
🧩 Logic puzzles use the same skills as algebra!
27. What is 18 × 5?Show answer
- 80
- 85
- 90 — correct
- 95
18 × 5 = 90. Trick: half of 18×10.
🧠 Multiplying by 5 is the same as ×10 then ÷2!
28. A circle's diameter is 10 cm. What is the radius?Show answer
- 2 cm
- 5 cm — correct
- 10 cm
- 20 cm
Radius = diameter ÷ 2 = 5 cm.
🌍 All points on a circle are the same distance (radius) from the centre!
29. What is 2/3 of 30?Show answer
- 15
- 18
- 20 — correct
- 22
1/3 of 30 = 10. 2/3 = 20.
🍕 'Of' in maths usually means multiply!
30. How many seconds in 3 minutes?Show answer
- 120
- 180 — correct
- 200
- 360
3 × 60 = 180 seconds.
⏱️ Olympic races are timed to hundredths of a second!
31. What is the least common multiple (LCM) of 4 and 6?Show answer
- 6
- 12 — correct
- 24
- 10
12 is the smallest number divisible by both 4 and 6.
🧮 LCM helps when adding fractions with different denominators!
32. What is 45% as a decimal?Show answer
- 0.045
- 0.45 — correct
- 4.5
- 45
45% = 45/100 = 0.45.
📊 Decimals, fractions, and percents are connected!
33. A triangle has angles 50° and 60°. What is the third angle?Show answer
- 60°
- 70° — correct
- 80°
- 90°
180 − 50 − 60 = 70°.
📐 Angle facts help in design, architecture, and games!
34. What is 1.5 × 4?Show answer
- 4.5
- 5
- 6 — correct
- 7
1.5 × 4 = 6.
🍕 1.5 pizzas for 4 people each would need 6 pizza-quarters!
35. In the sequence 1, 1, 2, 3, 5, 8 — what comes next?Show answer
- 11
- 12
- 13 — correct
- 15
Fibonacci: 5 + 8 = 13.
🌻 Sunflower spirals often follow Fibonacci numbers!
Medium Math & Logic Quiz Questions for Kids (with Answers)