Mastering 2-Digit by 1-Digit Multiplication with the Area Model

Mr. Nolles introduces the area model for multiplication, focusing on two-digit numbers multiplied by one-digit numbers. He demonstrates the method using three examples: 5 x 12, 7 x 15, and 6 x 25. Each example is broken down into partial products, which are then added to find the final result. The video concludes with encouragement to practice and an offer to provide graph paper if needed.

What is the purpose of the dark solid lines on the base 10 grid paper?

• To make the paper look neat

• To help identify every 10 units

• To make the paper more durable

• To separate different problems

In the first example, what two numbers are added to represent 12?

• 5 and 7

• 10 and 2

• 8 and 4

• 6 and 6

How many units are there in the area representing 5 x 10?

• 10

• 60

• 50

• 25

What is the sum of the partial products in the first example (5 x 12)?

• 60

• 40

• 70

• 50

In the second example, what is the partial product of 7 x 10?

• 105

• 50

• 70

• 35

What is the final answer for the multiplication of 7 x 15?

• 105

• 115

• 100

• 95

In the third example, how is the number 25 broken down?

• 20 and 5

• 5 and 20

• 15 and 10

• 10 and 15

What is the partial product of 6 x 10 in the third example?

• 30

• 120

• 90

• 60

What is the final answer for the multiplication of 6 x 25?

• 140

• 130

• 120

• 150

What should you do if you need help with the area model of multiplication?

• Give up

• Ask questions

• Ignore the problem

• Wait for someone to solve it for you