Shark Learning
First/Multiplication

Tens × Tens Products

Products of multiples of ten using place-value reasoning.
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Study Guide

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Practice Questions

  1. 20 × 40 = ?
    Show answer

    800

  2. 30 × 50 = ?
    Show answer

    1500

  3. 60 × 20 = ?
    Show answer

    1200

  4. 70 × 90 = ?
    Show answer

    6300

  5. 80 × 40 = ?
    Show answer

    3200

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