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Grade 2/Addition

Adding whole hundreds (3 addends)

Add three whole hundreds to strengthen mental grouping and place value skills.
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Easy(Three hundreds, to 500)
1
20 questions
2
20 questions
3
20 questions
4
20 questions
Medium(Three hundreds, to 900)
1
20 questions
2
20 questions
3
20 questions
4
20 questions
Hard(Three hundreds, 400–900)
1
20 questions
2
20 questions
3
20 questions
4
20 questions
Prerequisites
Addition: Missing Number - Multiples of 1006 WS
______ + 200 = 500
What to Do Next
Addition: Add Whole Hundreds (3 Addends)6 WS
300 + 400 + 200 = ______

Practice Questions

  1. 100 + 200 + 300 = ?
    Show answer

    600

  2. 200 + 300 + 400 = ?
    Show answer

    900

  3. 400 + 100 + 500 = ?
    Show answer

    1000

  4. 300 + 200 + 300 = ?
    Show answer

    800

  5. 500 + 200 + 100 = ?
    Show answer

    800

Quick Tip
Add two first, then the third; combine hundreds digits.
Teacher Resources
Teaching Notes

Combines multiple addends with place value understanding. Strategy: Think about the hundreds digit only (2+3+4=9), then add zeros. This reinforces that place value rules apply consistently across all positions.

Vocabulary
Whole hundreds: Numbers like 100, 200, 300, ending in two zeros.
Place value: The value of a digit based on its position.
Common Mistakes
  • Mixing up place values
  • Adding only two of three numbers
  • Writing 90 instead of 900
  • Forgetting to include all addends
  • Forgetting to write the two zeros in the hundreds place, resulting in answers like '6' instead of '600'.
  • Confusing adding hundreds with adding tens or ones without proper place value understanding.
Differentiation
SupportUse base-ten blocks or hundreds charts to visually represent and count the hundreds.
ChallengeChallenge students to add four or five whole hundreds, or introduce sums that exceed 900 (e.g., 400 + 500 + 200).
Discussion Questions
  • How is adding 100 + 200 + 300 like adding 1 + 2 + 3?
  • Why is understanding place value important when adding hundreds?
  • Can you think of a time outside of school when you might need to add hundreds?
Extension Activities
  • Add 4 whole hundreds.
  • Add whole thousands.
  • Use base-ten blocks.
Parent Tip

Ask your child to count by hundreds up to 1000.

Learning Path
Skill Cluster

Number Sense & Place Value

Estimated Time

15 minutes

Skills Practiced
Adding whole hundredsMultiple addendsPlace value understanding