Multiply 1-Digit by Whole Hundreds (522)

Teaching Notes

Emphasize place value understanding and the pattern of multiplying by multiples of 100. Guide learners to multiply the non-zero digits first, then append the two zeros.

Vocabulary

Whole Hundreds: Numbers like 100, 200, 300, ending in two zeros.

Product: The result of multiplication.

Common Mistakes

• Forgetting to append the two zeros after multiplying the non-zero digits.
• Miscounting the number of zeros to append.
• Errors in basic multiplication facts (e.g., 3x2).

Differentiation

Discussion Questions

• What pattern do you notice when multiplying by hundreds?
• How is 3 x 200 similar to 3 x 2?
• How does understanding place value help solve these problems?
• Can you explain a mental math strategy for these problems?

Extension Activities

• Use base-ten blocks.
• Relate to skip counting by hundreds.
• Practice with larger multiples.

Parent Tip

Ask: 'If 5 friends each have $100, how much money do they have?'

Skill Cluster

Number Sense & Operations

Estimated Time

15 minutes

Skills Practiced

Prerequisites

• Basic Multiplication Facts
• Place Value (Hundreds)
• Multiplying by Multiples of 10

Next Steps

• Multiplying 1-Digit by Whole Thousands
• Multiplying 2-Digits by 1-Digit Numbers
• Multiply 1-Digit by Whole Tens
• Multiply 1-Digit by Whole Thousands
• Multiply 2-Digits by Whole Hundreds