Multiplication 2-Digits

2-Digit Multiplication

Using the Area Model

Multiplying 2-Digit Numbers

Standard:

5.NBT5 - Fluenty multiply multi-digit whole numbers using the standard algorithm.

Objective:

Students will multiply by 2-digit numbers using the area model.

Multiple Choice

Warm up.

9 x 9 =

• 18

• 72

• 81

• 27

Multiple Choice

Warm up.

3 x 7 =

• 14

• 27

• 35

• 21

Multiple Choice

Warm up.

4 x 8 =

• 24

• 40

• 32

• 16

Fill in the Blank

Warm up.

7 x 6 = _

Area Model

• For the first factor, create columns for each place value (digit)

• For the second factor, create rows for each place value (digit)

Area Model

• Expand the first factor

• Expand the second factor

Area Model

• Fill in the area model

Area Model

• Find the partial products (the products in each box of the area model

Area Model

• Add all of the partial products to find the product

Area Model

Example 2

• For the first factor, create columns for each place value (digit)

• For the second factor, create rows for each place value (digit)

Area Model

Example 2

• Expand the first factor

• Expand the second factor

Area Model

Example 2

• Fill in the area model

Area Model

Example 2

• Find the partial products (the products in each box of the area model)

Area Model

Example 2

• Add all of the partial products to find the product

Poll

Which area model is used to solve the problem 64 x 32 = ?

Multiple Choice

Which is the correct way to expand 64 x 32 in an area model?

Multiple Select

Select the correct equations that belong in the area model.

• 60 x 30

• 30 x 4

• 6 x 3

• 60 x 2

• 4 x 2

Multiple Select

Select the correct partial products of the area model.

• 120

• 180

• 8

• 120

• 1,800

Fill in the Blank

What is the final product? (Add all of the partial products)