Multiplication with Area Models

What multiplication problem is represented by this area model?

• 4 x 370

• 4 x 300

• 4 x 379

• 4 x 3,079

What partial product goes in area A in this area model?

• 120

• 1,200

• 12,000

• 700

Which of the following shows the correct way to use expanded form to multiply 3,472 x 9?

• 3,472 x 9

• (3,000 + 472) x 9

• (9 x 3,000) + (9 x 400) + (9 x 70) + (9 x 2)

• (9 x 3,472) + (9 x 3,472)

What is the partial product way to solve

3 x 45?

• (30 x 4) + (30 x 5)

• 3 x 40 x 5

• 3 x (4 + 5)

• (3 x 40) + (3 x 5)

Which strategy could help you solve

7 x 800?

• 7 x 8 = 56, so 7 x 800 = 5,600

• 7 + 8 = 15, so 7 x 800 = 1,500

• 7 x 8 = 64, so 7 x 800 = 6,400

• 7 x 8 = 42, so 7 x 800 = 4,200

Select all the expressions that show 12,000.

• 3 x 400

• 30 x 400

• 600 x 20

• 80 x 200

• 10 x 1,200

What are the partial products for the problem 15 x 23? (Make a generic rectangle to solve.)

• 15, 35, 20, 100

• 200, 100, 30, 15

• 200, 10, 15, 30

• 2,000, 100, 15, 30

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

• 70

• 21

• 91

• 49

What partial product goes in area A?

• 120

• 12,000

• 1,200

• 700

126 x 2 =

• (100) + (20) + (6) =

• (100 x 2) + (20 x 2) + (6 x 2) =

• (100 + 2) + (20 + 2) + (6 + 2) =

• (100 x 2) x (20 x 2) x (6 x 2) =