Triple-Digit Missing Boxes Answer Key

This worksheet includes 18 three-digit subtraction box problems in which students must identify missing digits in either the minuend or the subtrahend. The problems require careful attention to borrowing and column structure. Students benefit from the visual scaffolding that keeps digits aligned and helps them track regrouping. Because numbers vary in difficulty, this sheet supports mixed-ability classrooms. It is excellent for strengthening analytical thinking, regrouping skills, and multi-digit subtraction fluency. Learners improve precision and reasoning as they fill in each missing value.

Curriculum-Matched Skills:

Mathematics – Three-Digit Subtraction with Unknown Digits

Mathematics – Complex Regrouping

Mathematics – Structured Place-Value Computation

Mathematics – Analytical Equation Reconstruction

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