Lesson Worksheet: Common Factors Mathematics • 4th Grade
In this worksheet, we will practice finding the common factors of two or three whole numbers by listing their factors.
Q2:
Which of the following numbers is not a common factor of 60 and 90?
- A3
- B15
- C13
- D10
- E2
Q3:
Farida claims that any two numbers have the common factor 1. Is she right?
- ANo
- BYes
Q4:
Noah claims that zero is a factor of only one number, which is the zero itself. Is this true?
- AYes
- BNo
Q5:
Which of the following numbers have the common factors 1, 3, and 5?
- A8, 15
- B15, 25
- C20, 30
- D15, 20
- E15, 30
Q6:
Are all factors of 9 also factors of 18?
- ANo
- BYes
Q7:
Find the common factors of the numbers 27 and 90.
- A3, 9
- B1, 2, 3, 6, 9, 18
- C1, 3, 9
- D1, 2, 3, 5, 6, 9, 10, 15, 18, 27, 30, 45, 90
Q8:
True or False: There are no common factors between 17 and 59.
- AFalse
- BTrue
Q9:
Which of these pairs of numbers has a common factor of 2?
- A24 and 28
- B28 and 27
- C24 and 21
- D24 and 27
- E21 and 27
Q10:
True of False: 5 is not a common factor of 24 and 36.
- AFalse
- BTrue
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