Double Digit Multiplication- Area Model

What is this multiplication strategy called?

• Array

• Area Model

• Repeated Addition

Tags

CCSS.4.NBT.B.5

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

• 70

• 21

• 91

Tags

CCSS.4.NBT.B.5

44 x 17 =

Prove your answer with an area model.

• 765

• 748

• 308

• 704

32 x 45 =

Use Area Model to prove your answer is correct .

• 1350

• 1440

• 1605

• 1445

What is the right order of steps for multiplication with the Area model?

• Add up all the partial products, Break the numbers into expanded form, multiply to find the partial products.

• Break the numbers into expanded form, multiply to find the partial products, and then add up all of the partial products.

Tags

CCSS.4.NBT.B.5

S=?

• 80

• 800

• 8,000

• 600

R=?

• 80

• 60

• 40

• 4

B=?

• 80

• 800

• 60

• 8

What is the correct answer for each letter?

• A=350 B=100 C=630 D=18

• A=3,500 B=10 C=630 D=18

• A=3,500 B=100 C=630 D=18

• A=3,500 B=100 C=540 D=18