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LCM Worksheet PDF with Answers for KS2 & 11+ Maths
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LCM Worksheet with Answers
Help children practise Lowest Common Multiple calculations with this engaging printable maths worksheet. Includes fully solved answers and child-friendly explanations. Perfect for Year 4, Year 5 and Year 6 pupils preparing for KS2 and 11+ maths.
Introduction
Lowest Common Multiple (LCM) is an important part of KS2 and 11+ maths learning. In this worksheet, children practise finding the LCM of different numbers using multiples and prime factor methods.
This worksheet is suitable for Year 4, Year 5 and Year 6 pupils and helps children improve number skills and multiplication confidence.
Topics Covered
- ✔ Finding Lowest Common Multiples
- ✔ Prime factorisation methods
- ✔ Multiples and number patterns
- ✔ Times tables revision
- ✔ Problem-solving with numbers
- ✔ KS2 and 11+ maths revision practice
Download Your Free LCM Worksheet PDFs
Help your child improve Lowest Common Multiple and number skills with printable worksheets and fully solved answers. Perfect for Year 4, Year 5 and Year 6 pupils preparing for KS2 and 11+ maths practice.
Interactive Solved Questions
Q1. Find the LCM of 3 and 5.
Check Answer15
Explanation:
The first common multiple of 3 and 5 is 15.
Q2. Find the LCM of 5 and 11.
Check Answer55
Explanation:
List the multiples and find the smallest common multiple.
Q3. Find the LCM of 7 and 13.
Check Answer91
Explanation:
Since both numbers are prime, multiply them together.
Q4. Find the LCM of 12 and 18.
Check Answer36
Explanation:
The smallest common multiple of 12 and 18 is 36.
Q5. Find the LCM of 15 and 21.
Check Answer105
Explanation:
List multiples or use prime factors to find the LCM.
Q6. Find the LCM of 18 and 33.
Check Answer198
Explanation:
Use prime factors and take the highest powers of each prime number.
Q7. Find the LCM of 10, 12 and 15.
Check Answer60
Explanation:
Find the highest powers of all prime factors and multiply them together.
Q8. Find the LCM of 5, 7 and 9.
Check Answer315
Explanation:
Multiply the highest powers of the prime factors together.
Q9. Find the LCM of 7, 11 and 14.
Check Answer154
Explanation:
Use prime factors and multiply the highest powers.
Q10. Find the LCM of 11, 13 and 17.
Check Answer2431
Explanation:
All three numbers are prime, so multiply them together.
Benefits of This Worksheet
This worksheet helps children strengthen number skills, multiplication knowledge and confidence with Lowest Common Multiples. Regular practice also helps pupils improve problem-solving speed and accuracy for KS2 and 11+ maths.
The interactive solved questions and clear explanations make learning engaging for both children and parents.
Final Words
We hope this printable LCM worksheet helps children build confidence and enjoy practising maths skills at home or in school. Keep practising regularly to become faster and more accurate with Lowest Common Multiples.
This worksheet is ideal for classroom revision, homework practice, homeschooling and 11+ preparation.
