Multiplying with Zeros and Models

This video tutorial covers Chapter 3, focusing on multiplication techniques. It begins with basic multiplication problems, emphasizing the importance of zeros. The tutorial then explains how to estimate products by rounding numbers before multiplying. It introduces the area model and partial products method for solving multiplication problems, followed by the regrouping method. The video concludes with solving real-world word problems using these multiplication techniques.

What is the product of 60 times 20?

• 200

• 120

• 1200

• 600

How do you solve 80 times 70 using zeros?

• Ignore zeros

• Add zeros at the end

• Cross out zeros and multiply

• Multiply zeros first

What is the estimated product of 67 times 34 after rounding?

• 2100

• 2000

• 2200

• 2300

How do you set up an area model for 53 times 37?

• Use a single rectangle

• Split into 4 parts

• Do not split

• Split into 3 parts

What is the final product of 76 times 51 using partial products?

• 3900

• 3600

• 4000

• 3876

How many pieces of candy did Julia buy if she bought 21 bags with 45 pieces each?

• 900

• 850

• 945

• 1000

What is the key takeaway when multiplying numbers with zeros?

• Ignore zeros

• Always add zeros

• Cross out zeros

• Multiply zeros first