Decomposing Multiplication Strategies

Miss Block from third grade at Paradise Canyon demonstrates the decompose strategy for multiplication, also known as the break apart strategy. This method, related to the distributive property, helps simplify multiplication problems by breaking them into smaller, more manageable parts. Using a garden example, she illustrates how to decompose the multiplication of 8 by 7 into two simpler calculations: 5 times 8 and 2 times 8. This approach makes it easier for third graders to understand and solve multiplication problems.

What is the main objective of the video presented by Miss Block?

• To demonstrate the decompose strategy for multiplication

• To teach addition strategies

• To introduce subtraction methods

• To explain division techniques

What is another name for the decompose strategy?

• Associative property

• Commutative property

• Distributive property

• Identity property

What are the dimensions of the garden used in the multiplication problem?

• 8 feet by 7 feet

• 7 feet by 2 feet

• 7 feet by 5 feet

• 8 feet by 5 feet

Why is the number 7 changed to 5 and 2 in the decompose strategy?

• To make the numbers larger

• To simplify the multiplication

• To change the problem entirely

• To make the numbers smaller

What is the result of 5 times 8 in the decomposed multiplication?

• 30

• 45

• 35

• 40

What is the result of 2 times 8 in the decomposed multiplication?

• 12

• 18

• 14

• 16

What is the total result of the decomposed multiplication problem?

• 50

• 56

• 54

• 58

What is the purpose of using the decompose strategy in this context?

• To calculate area

• To solve division problems

• To add numbers

• To simplify multiplication facts

Which property of multiplication is highlighted by the decompose strategy?

• Commutative

• Associative

• Distributive

• Identity

What is the final multiplication equation that equals 56?

• 7 times 8

• 6 times 8

• 9 times 8

• 8 times 8