# Lesson Worksheet: The Greatest Common Factor Mathematics • 6th Grade

In this worksheet, we will practice finding the greatest common factor of two or more numbers by writing all the factors of these numbers.

Q1:

Find the greatest common factor of 26 and 14.

Q2:

Find the greatest common factor of 63 and 42.

Q3:

Find the greatest common factor of 9 and 14.

Q4:

Find the greatest common factor of 21 and 10.

Q5:

Can the greatest common factor of two numbers be 1?

• AYes
• BNo

Q6:

Find the GCF of 84 and 28.

Q7:

True of False: The greatest common factor of 40 and 30 is 17.

• AFalse
• BTrue

Q8:

True or False: The greatest common factor of 86 and 70 is 2.

• ATrue
• BFalse

Q9:

Find the common factors of 56 and 36 and state the GCF.

• AThe common factors are , and the GCF is 4.
• BThe common factors are , and the GCF is 4.
• CThe common factors are , and the GCF is 56.
• DThe common factors are , and the GCF is 8.

Q10:

What is the greatest common factor between the two numbers 51 and 53?

• A2
• B51
• C53
• D1