Finding GCF and LCM with Generic Rectangles

What is the greatest common factor (GCF)?

• The product of all given numbers

• The largest number that divides all given numbers

• The smallest number that divides all given numbers

• The sum of all given numbers

Tags

CCSS.4.OA.B.4

Which of the following is a factor of 6?

• 2, 3, 4, 6

• 1, 3, 5, 6

• 1, 2, 4, 6

• 1, 2, 3, 6

Which method can be used to find the GCF?

• All of the above

• Prime factorization

• Generic rectangle method

• Listing multiples

What is the GCF of 12, 18, and 24?

• 2

• 12

• 3

• 6

Tags

CCSS.4.OA.B.4

Which of the following is NOT a factor of 24?

• 8

• 5

• 3

• 1

What is the least common multiple (LCM)?

• The product of all given numbers

• The largest number that is a multiple of all given numbers

• The sum of all given numbers

• The smallest number that is a multiple of all given numbers

Which number is a common multiple of 12, 18, and 24?

• 60

• 48

• 36

• 24

What is the GCF of 27, 9, and 6?

• 3

• 2

• 6

• 1

Tags

CCSS.4.OA.B.4

Which of the following is a multiple of 9?

• 36

• 27

• 18

• All of the above

What is the LCM of 27, 9, and 6?

• 54

• 27

• 81

• 18