Mastering 3-Digit by 1-Digit Multiplication

The video tutorial introduces two multiplication strategies: partial products (distributive property) and area models. It explains how to use these strategies to multiply two-digit by one-digit numbers and extends to larger numbers. The tutorial provides examples, including 243 x 4, 456 x 5, and 478 x 6, demonstrating both methods. The teacher emphasizes choosing the strategy that students are most comfortable and successful with.

What are the two main strategies introduced for multiplying two-digit by one-digit numbers?

• Partial products and area models

• Addition and subtraction

• Long division and area models

• Partial products and long division

When using the area model, what is the first step in solving 243 times 4?

• Break the number into expanded form

• Add the numbers

• Draw a rectangle

• Multiply directly

In the area model, what is the result of multiplying 200 times 4?

• 1000

• 400

• 800

• 600

What is the main difference between the area model and partial products?

• Area model uses addition

• Partial products are faster

• Partial products use subtraction

• Area model is more visual

When using partial products, what is the expanded form of 243?

• 200 + 30 + 4

• 240 + 3

• 20 + 43

• 200 + 40 + 3

In the partial products method, what is the result of 40 times 4?

• 180

• 160

• 140

• 120

What is the first step in solving 456 times 5 using partial products?

• Break the number into expanded form

• Multiply directly

• Add the numbers

• Draw a rectangle

What is the result of 400 times 5 in the partial products method?

• 1500

• 3000

• 2000

• 2500

In the challenging problem, what is the expanded form of 478?

• 400 + 70 + 8

• 40 + 78

• 470 + 8

• 400 + 78

What is the final result of 478 times 6 using partial products?

• 2870

• 2880

• 2860

• 2868