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Class 5–6 Maths: LCM practice questions

Practise lcm for Classes 5 and 6. Try the 10-question quiz below and see each answer explained straight away, then read all 10 worked examples with answers underneath. Free, no sign-up.

LCM: worked examples with answers

These Maths questions are generated, so a fresh set appears every time you press "Practise more questions". Here are some worked examples.

1. What is the LCM (lowest common multiple) of 6 and 8?

   1. A. 24 ✓
   2. B. 8
   3. C. 48
   4. D. 2

   Answer: 24. List multiples of each number. The smallest one they share is 24.

2. What is the LCM (lowest common multiple) of 6 and 9?

   1. A. 3
   2. B. 36
   3. C. 18 ✓
   4. D. 24

   Answer: 18. List multiples of each number. The smallest one they share is 18.

3. What is the LCM (lowest common multiple) of 4 and 6?

   1. A. 12 ✓
   2. B. 6
   3. C. 24
   4. D. 2

   Answer: 12. List multiples of each number. The smallest one they share is 12.

4. What is the LCM (lowest common multiple) of 4 and 10?

   1. A. 10
   2. B. 40
   3. C. 20 ✓
   4. D. 24

   Answer: 20. List multiples of each number. The smallest one they share is 20.

5. What is the LCM (lowest common multiple) of 10 and 15?

   1. A. 60
   2. B. 15
   3. C. 5
   4. D. 30 ✓

   Answer: 30. List multiples of each number. The smallest one they share is 30.

6. What is the LCM (lowest common multiple) of 8 and 12?

   1. A. 32
   2. B. 48
   3. C. 12
   4. D. 24 ✓

   Answer: 24. List multiples of each number. The smallest one they share is 24.

7. What is the LCM (lowest common multiple) of 8 and 10?

   1. A. 80
   2. B. 48
   3. C. 10
   4. D. 40 ✓

   Answer: 40. List multiples of each number. The smallest one they share is 40.

8. What is the LCM (lowest common multiple) of 9 and 12?

   1. A. 108
   2. B. 72
   3. C. 3
   4. D. 36 ✓

   Answer: 36. List multiples of each number. The smallest one they share is 36.

9. What is the LCM (lowest common multiple) of 6 and 15?

   1. A. 3
   2. B. 60
   3. C. 36
   4. D. 30 ✓

   Answer: 30. List multiples of each number. The smallest one they share is 30.

10. What is the LCM (lowest common multiple) of 12 and 18?

    1. A. 216
    2. B. 36 ✓
    3. C. 72
    4. D. 48

    Answer: 36. List multiples of each number. The smallest one they share is 36.

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