Fill-the-Missing-Addend with +4/+5

This printable math worksheet is designed to help students in Grades 1-2 deepen their understanding of addition relationships while strengthening fluency with +4 and +5 facts. Instead of solving for the sum, students determine the missing addend, encouraging reverse thinking and a stronger grasp of how numbers combine.

Learning Goals

• Identifying Missing Addends (Grades 1-2)
  Practice finding unknown numbers in addition equations involving +4 and +5.
• Understanding Fact Families & Number Relationships
  Reinforce how related facts are connected within an addition family.
• Reverse Addition Reasoning
  Encourage students to think backward to determine what part is missing.
• Flexible Thinking with +4 and +5 Facts
  Strengthen adaptability when working with closely related addition patterns.

Instructional Benefits

• Teacher-Created Resource
  Designed to align with elementary math standards and conceptual learning goals.
• Concept-Focused Format
  Moves beyond memorization to assess true understanding of addition structure.
• Diagnostic-Friendly
  Helps teachers identify gaps in reasoning or fact-family understanding.
• Flexible Classroom Use
  Ideal for guided instruction, small groups, intervention, independent work, or assessment.

This fill-the-missing-addend worksheet helps students build number sense, logical reasoning, and confidence with addition. By working with reversed equations involving +4 and +5, learners strengthen foundational skills that support subtraction, algebraic thinking, and future mathematical success.

This worksheet is part of our Addition Facts With 4 and 5 Worksheets collection.