Missing Addend Practice Answer Key

This worksheet presents addition facts with missing addends or missing sums, allowing students to think flexibly about equation components. Learners fill in the blank to complete each equation while practicing the concepts of adding zero and adding one. The variety of missing positions encourages deeper number sense and reinforces understanding that addition is a relationship between quantities.

Curriculum Matched Skills

Mathematics – Determining Missing Addends

Mathematics – Understanding Addition Structure

Mathematics – Fact Fluency With 0 and 1

Mathematics – Logical Reasoning with Equations

This worksheet is part of our Addition Facts With 1 and 0 Worksheets collection.