Greatest Common Factor (GCF) Worksheet
Practice finding the Greatest Common Factor (GCF) of two numbers with this Grade 4 math worksheet.
Includes
Fill in the BlanksMultiple ChoiceShort AnswerTrue / False
Standards
CCSS.MATH.CONTENT.4.OA.B.4
Topics
mathgrade 4GCFgreatest common factornumber sense
6 sections · Free to use · Printable
Greatest Common Factor (GCF) Practice
Name:
Date:
Score:
Read each question carefully and find the greatest common factor (GCF) for the given numbers.
1. List all the factors of 12:
2. List all the factors of 18:
3. What is the GCF of 8 and 12?
a
2
b
4
c
8
d
12
4. The GCF of 10 and 15 is:
a
1
b
5
c
10
d
30
5. Find the GCF of 6 and 9. Show your work.
6. Find the GCF of 20 and 30. Show your work.
7. The GCF of two prime numbers is always 1.
T
True
F
False
8. The GCF of 7 and 14 is 7.
T
True
F
False