Mastering 3-Digit by 2-Digit Multiplication with Partial Products

This video tutorial by Miss Poskus covers the concept of partial products in three-digit by two-digit multiplication. It begins with an introduction to key vocabulary terms such as 'product' and 'equation'. The lesson emphasizes the importance of understanding when to use multiplication in word problems, particularly when groups are of the same size. A teacher model example is provided, demonstrating how to solve a multiplication problem using partial products. The video concludes with guided practice, allowing students to apply the steps learned in solving similar problems.

What is the term for the answer to a multiplication problem?

• Sum

• Quotient

• Difference

• Product

Which of the following is an example of an equation?

• 1

• 1 + 1 = 2

• 1 + 1

• 2

When should you use multiplication in a word problem?

• When finding a total with the same group sizes

• When dividing groups

• When finding a total with different group sizes

• When subtracting groups

What makes multiplication different from addition in terms of group sizes?

• Groups must be the same size in addition

• Groups must be different sizes in addition

• Groups must be the same size in multiplication

• Groups can be different sizes in multiplication

What is the first step in solving a partial products multiplication problem?

• Write the equation

• Add the partial products

• Expand the two-digit number

• Multiply the three-digit number

How do you expand the number 17 according to its place value?

• 70 + 1

• 17

• 1 + 7

• 10 + 7

What do you do after expanding the two-digit number in partial products multiplication?

• Write the equation

• Find the total

• Multiply the three-digit number by each expanded value

• Add the partial products

In the guided practice, what is the expanded form of 49?

• 49

• 4 + 9

• 90 + 4

• 40 + 9

What is the final step in solving a partial products multiplication problem?

• Add the partial products

• Multiply the three-digit number

• Expand the two-digit number

• Write the equation

In the independent practice, what is the expanded form of 25?

• 2 + 5

• 50 + 2

• 20 + 5

• 25