Column Addition: 3-Digit (2 Addends) (762)

Teaching Notes

For two 3-digit addends, emphasize consistent alignment.

Common Mistakes

• Dropping a carry in tens
• Writing carry in the answer row
• Misaligning digits by place value.
• Forgetting to carry regrouped numbers.
• Adding carried digit incorrectly.
• Errors in basic addition facts.

Differentiation

Discussion Questions

• Why is digit alignment important?
• When do you need to regroup in addition?
• How is regrouping similar to bundling?
• Can you estimate the sum before adding?

Skill Cluster

Number Sense & Operations

Estimated Time

11 minutes

Skills Practiced

Prerequisites

• 761
• 2-Digit Addition with Regrouping
• Place Value to Hundreds

Next Steps

• 4-Digit Addition with Regrouping
• Addition with Three Addends
• Column Addition: 3-Digit (3 Addends)
• Column Addition: 4-Digit (2 Addends)