Grade 5/Multiplication
Tens × Tens Products
Products of multiples of ten using place-value reasoning.
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Teacher Resources
Teaching Notes
Emphasize breaking down problems into basic facts and applying place value for zeros. Reinforce the concept of multiplying by 100.
Vocabulary
Product: The answer when two numbers are multiplied.
Append: Add to the end.
Common Mistakes
- Only adding one zero
- Forgetting one or both zeros
- Incorrect basic multiplication facts
- Confusing with addition of tens
Differentiation
SupportUse visual models like arrays or base ten blocks. Practice basic facts separately.
ChallengeChallenge with three-digit multiples or mental math computation.
Discussion Questions
- How does knowing 2 × 3 help solve 20 × 30?
- Why do we add two zeros, not just one?
- What patterns do you see in these products?
- How is this strategy useful for mental math?
Extension Activities
- Multiply 60 x 70.
- Multiply 80 x 90.
- Word problems with tens.
Parent Tip
Have your child multiply numbers like 30 x 50, explaining the steps.
Learning Path
Skill Cluster
Number Sense & Operations
Estimated Time
8 minutes
Skills Practiced
place value scaling
Prerequisites
- 825
- Basic Multiplication Facts
- Multiplying by 10
- Place Value Understanding
Next Steps
- Multi-Digit Multiplication (2x2 digits)
- Multiplying by Powers of Ten
- Two-Digit by Two-Digit Multiplication
- Area Model Multiplication