Fill-the-Missing-Addend

This worksheet strengthens addition fact fluency by asking students to determine a missing addend when adding 2 or 3. By reversing the equation, students practice flexible thinking and reinforce number relationships. This format also helps teachers assess students’ understanding of how addition works beyond memorization-particularly whether they recognize fact families and understand how numbers combine.

Curriculum Skills

Identifying missing addends

Understanding number relationships

Strengthening fact family reasoning

Reinforcing fluency with +2 and +3 facts

This worksheet is part of our Addition Facts With 2 and 3 Worksheets collection.