Search the Minuend Answer Key

This worksheet includes 20 three-digit subtraction equations with missing first numbers. Students must reconstruct the entire number by analyzing the given difference and subtrahend. Problems vary from simple regrouping to more complex multi-step thinking. The page is ideal for upper-elementary learners who need practice inferring unknown values. It works well for homework, classwork, or skill tests. Students deepen their understanding of subtraction by reasoning backward through multi-digit problems.

Curriculum Matched Skills

Mathematics – Multi-Digit Reasoning

Mathematics – Missing Minuend with Regrouping

Mathematics – Reconstructing Operations

Mathematics – Algebraic Awareness

This worksheet is part of our Missing Number Subtraction Worksheets collection.