Finding GCF and LCM with Venn Diagrams

What are we trying to find for the numbers 8 and 12?

• Sum and Difference

• Product and Quotient

• Greatest Common Factor and Least Common Multiple

• Square and Cube

What are the factors of 8?

• 2, 3, 4

• 1, 2, 4, 8

• 2, 4, 8

• 2, 2, 2

Tags

CCSS.4.OA.B.4

How can 12 be obtained using multiplication?

• 2 x 2 x 2

• 2 x 3 x 2

• 2 x 2 x 3

• 3 x 3 x 2

Tags

CCSS.4.OA.C.5

What is the first step in drawing the Venn diagram?

• List the factors of each number

• List the common factors

• Shade the common factors

• Draw two circles

Tags

CCSS.4.NBT.A.2

Which factor is shaded in pink in the Venn diagram?

• 3

• 8

• 2

• 4

Tags

CCSS.4.OA.B.4

Where do we place the common factors in the Venn diagram?

• Outside

• Center

• Right side

• Left side

What is the GCF of 8 and 12?

• 8

• 6

• 4

• 2

How do you find the GCF using the Venn diagram?

• Subtract the numbers in the center

• Multiply the numbers in the center

• Divide the numbers in the center

• Add the numbers in the center

What is the LCM of 8 and 12?

• 20

• 28

• 16

• 24

How do you find the LCM using the Venn diagram?

• Multiply all the numbers in the diagram

• Add all the numbers in the diagram

• Subtract all the numbers in the diagram

• Divide all the numbers in the diagram