Grade 4/Addition
Addition: Add Whole Hundreds (3 Addends) (432)
Add three multiples of 100 together. Look for pairs that make 1,000. Example: 300 + 400 + 200 = 900
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Quick Tip
Count how many hundreds you have in total, then multiply by 100.
Teacher Resources
Teaching Notes
Emphasize place value understanding and mental math strategies, especially looking for combinations that make 10 or 100. Relate adding hundreds to adding single-digit numbers.
Vocabulary
Addend: A number in an addition problem.
Sum: The result of adding numbers.
Common Mistakes
- Errors in basic addition facts (e.g., 3 + 4 + 2).
- Forgetting to append the two zeros to the sum.
- Miscalculating when using mental math strategies.
Differentiation
SupportUse base-ten blocks or a number line to visualize hundreds.
ChallengeIntroduce four addends or addends involving tens and ones.
Discussion Questions
- How is adding 300 + 400 + 200 like adding 3 + 4 + 2?
- What strategies can you use to quickly add these hundreds?
- Can you think of a real-world situation where you might add three hundreds?
- How does finding pairs that make 1,000 help you solve these problems?
Extension Activities
- Add four hundreds.
- Use a number line.
- Practice with larger numbers.
Parent Tip
Have your child count 100 items, then another 100, then a third 100, and count the total.
Learning Path
Skill Cluster
Number Sense and Operations
Estimated Time
15 minutes
Skills Practiced
add three numbersadd whole hundredscommutative property
Prerequisites
- Addition within 20
- Understanding place value to hundreds
- Adding multiples of 10
Next Steps
- Adding whole thousands
- Adding three-digit numbers (no regrouping)
- Adding three-digit numbers (with regrouping)
- Addition: Add Whole Tens (3 Addends)
- Addition: Add 3-Digit Numbers (No Regrouping)