Missing Factor: Multiply Whole Tens (524)

Standards

Printable Aids

Teaching Notes

Emphasize using inverse operations (division) to find the missing factor. Relate problems to place value understanding for multiplying by tens.

Vocabulary

Factor: A number you multiply.

Missing Factor: The unknown number in a multiplication problem.

Common Mistakes

• Forgetting to account for the zero in multiples of ten.
• Incorrectly applying basic multiplication facts.
• Confusing the missing factor with the product.

Differentiation

Discussion Questions

• How does knowing 6 x 3 help you solve 6 x __ = 180?
• What strategies can you use to find a missing factor quickly?
• Can you think of a real-world problem where you would need to find a missing factor?
• How is finding a missing factor related to division?

Extension Activities

• Create missing factor word problems.
• Use a calculator to check answers.
• Play a missing factor game.

Parent Tip

Ask your child to find the missing price for multiple items.

Skill Cluster

Number Sense & Operations

Grade Level

3-4

Skills Practiced

Prerequisites

• Multiplication Facts
• Place Value
• Basic Multiplication Facts
• Understanding Place Value
• Inverse Operations (Division)

Next Steps

• Multi-Digit Multiplication
• Estimating Products
• Multiply Two-Digit Numbers
• Missing Factors with Larger Numbers
• Division with Multiples of Ten
• Multiply by Multiples of 10
• Divide Whole Tens
• Two-Digit Multiplication