Friday Warm Up

Evaluate -2x  if     x = 10

• -8
• 20
• -20

Evaluate -2x  if     x = 10

• -8
• 20
• -20

What is this multiplication strategy called?

• Array

• Area Model

• Repeated Addition

Based on the area model, what is the product of 13 and 7?

• 70

• 21

• 91

What is the product of this area model?

• 1,248

• 624

• 2

What is the multiplication equation of this area model?

• 624 x 2

• 1,248 x 2

• 600,204 x 2

What is the final step of finding the product of this area model?

• 600 + 20 + 4

• 1,200 + 40 + 8

• 600 + 1,200

What is the multiplication equation of this area model?

• 13 x 7

• 103 x 7

• 91 x 7

What is the final step of finding the product of this area model?

• 70 + 21

• 10 + 3

• 91 + 7 + 13

What is the expanded form of 823?

• 8 + 2 + 3

• 80 + 20 + 3

• 800 + 20 + 3

• 800 + 20 + 30