Mastering Area Model Multiplication for 2-Digit Numbers

This video tutorial demonstrates how to multiply 22 by 15 using the area model. It begins by breaking down the numbers into tens and ones, then drawing and labeling a rectangle to represent the area model. The tutorial continues by calculating the area of each section, known as partial products, and concludes by adding these partial products to find the final product of 330.

What is the first step in using the area model for multiplication?

• Breaking apart the factors into tens and ones

• Drawing the rectangle

• Adding the partial products

• Labeling the sides of the rectangle

Tags

CCSS.4.NBT.B.5

How is the number 22 broken down in the area model?

• 20 + 2

• 10 + 12

• 22 + 0

• 15 + 7

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CCSS.2.OA.A.1

What do you do after drawing the rectangle for the area model?

• Multiply the factors directly

• Add the partial products

• Label the length and width with the factors

• Break down the factors again

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CCSS.4.NBT.B.5

How are the sides of the rectangle labeled for the factors 22 and 15?

• 22 on the top as 20 + 2 and 15 on the side as 10 + 5

• 22 on the left and 15 on the right

• 22 on the side as 20 + 2 and 15 on the top as 10 + 5

• 22 on the bottom and 15 on the top

Tags

CCSS.4.NBT.B.5

What is the purpose of making lines at the plus signs in the area model?

• To multiply the factors

• To label the sides

• To separate the area model into sections

• To add the partial products

Tags

CCSS.4.NBT.B.5

What is the length and width of the top left section in the area model?

• 5 and 20

• 5 and 2

• 10 and 2

• 10 and 20

Tags

CCSS.4.NBT.B.5

How do you calculate the area of the pink shaded box?

• 10 times 20

• 10 times 2

• 5 times 20

• 5 times 2

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CCSS.3.OA.A.1

What is the partial product for the yellow section?

• 20

• 100

• 10

• 200

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CCSS.3.OA.A.1

Why are the partial products called 'partial'?

• Because they are smaller numbers

• Because they are added later

• Because they are not complete

• Because they are only part of the final product

Tags

CCSS.4.NBT.B.5

What is the final product of multiplying 22 times 15 using the area model?

• 340

• 330

• 320

• 300

Tags

CCSS.4.NBT.B.5