Grade 4/Multiplication
Column Multiplication: Multi-Digit x 1-Digit (822)
Mixed 2–4 digit × 1-digit column multiplication with regrouping (carries) and place-value alignment, including zeros and chain carries.
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Teacher Resources
Teaching Notes
Emphasize place value and regrouping. Guide learners through each step systematically.
Vocabulary
Digit: A single symbol used to write numbers.
Carry: Regrouping a value to the next place.
Common Mistakes
- dropping a carry
- misalignment
- skipped digit
- Forgetting carries
- Incorrect digit alignment
- Basic multiplication errors
- Regrouping errors
Differentiation
SupportUse grid paper; focus on one digit at a time.
ChallengeIntroduce estimation; explore two-digit multipliers.
Discussion Questions
- Why is place value critical here?
- How do 'carries' help in regrouping?
- Can we estimate the answer first?
- When might we use this skill?
Extension Activities
- Multiply by larger one-digit numbers.
- Use graph paper for alignment.
- Create word problems.
Parent Tip
Ask your child to explain the carrying step.
Learning Path
Skill Cluster
Number Operations
Estimated Time
14 minutes
Skills Practiced
carry trackingplace value alignment
Prerequisites
- 820
- 821
- Basic multiplication facts
- Place value to thousands
- 2-digit x 1-digit multiplication
Next Steps
- Multi-digit by 2-digit multiplication
- Multiplication estimation
- Column Multiplication: 2-Digit × 2-Digit
- Multiplication: Estimation and Rounding