Addition: Thousands and Hundreds (435)

Lesson Plan

Adding with Thousands

Standards

Printable Aids

Teaching Notes

Emphasize aligning place values when adding thousands and hundreds. Explain how combining these specific units creates a new number without carrying.

Vocabulary

Thousands: Place value representing 1000 units.

Hundreds: Place value representing 100 units.

Common Mistakes

• Misaligning place values (e.g., adding 7,000 to 30 instead of 300).
• Forgetting the trailing zeros in thousands or hundreds during mental calculation.
• Incorrectly treating thousands and hundreds as separate digits rather than place values.

Differentiation

Discussion Questions

• What does the '7' represent in 7,000, and the '3' in 300?
• How is adding 7,000 + 300 similar to adding 7 + 3?
• Can you explain why 7,000 + 300 equals 7,300 and not 730 or 73,000?
• Think of a real-life situation where you might add thousands and hundreds.

Extension Activities

• Add thousands and tens.
• Use place value charts.
• Add four numbers.

Parent Tip

Ask your child to count 2000 blocks and 300 blocks, then combine them.

Skill Cluster

Number Sense and Place Value Operations

Grade Level

3-4

Skills Practiced

Prerequisites

• Place Value to 1000
• Basic Addition
• Place Value: Understanding Thousands and Hundreds
• Addition: Add Whole Hundreds

Next Steps

• Multi-Digit Addition
• Rounding
• Addition: Add Thousands, Hundreds, and Tens
• Addition: Multi-Digit Addition (with carrying)
• Addition: Add Thousands and Tens
• Place Value: Identify Numbers to Ten Thousands