GCF and LCM

GCF of:

14 and 20

• 7

• 28

• 2

• 6

LCM of: 
5 and 8

• 20
• 40
• 5
• 8

Tags

CCSS.4.OA.B.4

GCF of: 
56 and 49

• 14
• 2
• 8
• 7

Tags

CCSS.6.NS.B.4

LCM of:
15 and 20

• 5
• 45
• 60
• 300

Tags

CCSS.4.OA.B.4

List all the factors of 12

• 1, 2, 3, 4, 6, 12
• 1, 2, 4, 12
• 1, 12
• 1, 2, 3, 4, 5, 6, 12

Tags

CCSS.4.OA.B.4

 Find the GCF of each set of numbers. 
28, 42, 56

• 14
• 4
• 7
• 8

Tags

CCSS.6.NS.B.4

Bill cut out 6 squares and 8 circles. He divided the cutouts into groups so that the same number of squares and circles were in each group. What is the greatest number of groups he could have made?

• 2

• 3

• 4

Tags

CCSS.4.OA.B.4

Which is not a factor of 12?

• 3

• 6

• 24

Tags

CCSS.4.OA.B.4

Which pair of numbers has a GCF of 6?

• 3 and 18

• 6 and 12

• 12 and 24

Tags

CCSS.4.OA.B.4

Which pair of numbers has a LCM of 20?

• 4 and 5

• 2 and 10

• 5 and 10

Tags

CCSS.6.NS.B.4