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Second/Multiplication

Multiply 1-Digit by Whole Tens

Practice multiplying 1-digit numbers by whole tens (10, 20, 30, etc.).
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Study Guide

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Practice Questions

  1. 3 × 10 = ?
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    30

  2. 5 × 20 = ?
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    100

  3. 4 × 30 = ?
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    120

  4. 7 × 10 = ?
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    70

  5. 6 × 40 = ?
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    240

Teacher Resources
Standards
3.NBT.A.3
Printable Aids
Place Value ChartBase Ten Blocks
Teaching Notes

Emphasize using known multiplication facts and place value understanding. Students can multiply the non-zero digits, then append the zero.

Vocabulary
Whole Tens: Numbers like 10, 20, 30, ending in zero.
Product: The result of multiplication.
Common Mistakes
  • Forgetting to append the zero at the end of the product.
  • Incorrectly multiplying the basic facts (e.g., 3x20 instead of 3x2).
  • Adding instead of multiplying (e.g., 3 + 20 instead of 3 x 20).
Differentiation
SupportUse arrays or base-ten blocks to visualize multiples of ten.
ChallengeExtend to multiplying 1-digit numbers by whole hundreds.
Discussion Questions
  • How is 3 x 20 related to 3 x 2?
  • What is special about multiplying by a number ending in zero?
  • Can you think of a real-life situation where you multiply a number by a multiple of 10?
  • How does understanding place value help solve these problems efficiently?
Extension Activities
  • Use base-ten blocks.
  • Relate to skip counting by tens.
  • Practice with larger multiples.
Parent Tip

Ask: 'If 4 friends each have $10, how much money do they have?'

Learning Path
Skill Cluster

Multiplication Strategies

Grade Level

3-4

Skills Practiced
Multiply 1 digit by tensPlace value understanding