Shark Learning
Grade 3/Addition

1- & 2-Digit (3 Addends)

Three addends with a mix of 1- and 2-digit numbers for mental fluency.
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Study Guide

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1- & 2-Digit (3 Addends) preview

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#WorksheetQuestionsActions
Easy
1
12 questions
2
12 questions
Medium
1
12 questions
2
12 questions
Hard
1
12 questions
2
12 questions

Practice Questions

  1. 5 + 40 + 55 = ?
    Show answer

    100

  2. 7 + 28 + 32 = ?
    Show answer

    67

  3. 6 + 24 + 35 = ?
    Show answer

    65

  4. 9 + 41 + 29 = ?
    Show answer

    79

  5. 8 + 33 + 27 = ?
    Show answer

    68

Teacher Resources
Teaching Notes

Have students circle pairs that make ten or hundred.

Common Mistakes
  • Ignoring make-ten pairs.
  • Incorrectly combining 1- and 2-digit numbers.
  • Losing track of sums mentally.
  • Not checking for friendly sums first.
Differentiation
SupportUse manipulatives or number lines for visualization.
ChallengeAdd a fourth addend or introduce larger numbers.
Discussion Questions
  • What strategies did you use today?
  • How do 'make ten' pairs help?
  • Can you find different ways to add?
  • When is mental math useful in daily life?
Learning Path
Skill Cluster

Addition Strategies

Estimated Time

12 minutes

Skills Practiced
Addition mental 3 addends