Factors and GCF

Which of the following numbers has 7 and 3 as a factor?

• 37

• 42

• 56

• 73

Tags

CCSS.4.OA.B.4

Which of the following numbers is NOT a factor of 45?

• 3

• 5

• 7

• 9

Tags

CCSS.4.OA.B.4

Which of the following statements is NOT TRUE about 1?

• The number 1 is a factor of all counting numbers

• None of these

• The number is the only number with one factor

• The GCF of 1 and any number is 1

Tags

CCSS.4.OA.B.4

Which of the following pairs of numbers has a GCF of 9?

• 6 and 9

• 18 and 45

• 18 and 36

• 36 and 72

How many common factors the numbers 28 and 42 has?

• 3

• 4

• 5

• 6

Tags

CCSS.4.OA.B.4

6 is the greatest common factor (GCF) of 24 and 36.

• 
• 

Who's telling a TRUE statement?

• 
• 
• 
• 

Tags

CCSS.4.OA.B.4

What is the GCF of 36 and 56?

• 2

• 4

• 6

• 8

Which are the common factors and 63 and 72?

• 1, 3, 9

• 1, 9

• 1, 3, 4, 9

• 1, 3, 4, 8, 9

One common factor of two numbers is 20. Another common factor is 10. If both numbers are less than 50, what are the two numbers?

• 10 and 20

• 20 and 40

• 20 and 30

• 30 and 40

Tags

CCSS.4.OA.B.4