Subtracting Ones Practice Answer Key

This worksheet focuses on subtracting one from single-digit numbers using a vertical computation format. Students practice writing the results in clearly defined answer boxes, reinforcing accurate column alignment. The problems give learners repeated exposure to subtraction patterns that involve decreasing a number by one, supporting strong number sense. Students develop fluency and confidence as they work through the sheet, strengthening essential mental math skills. This resource is ideal for foundational practice or review sessions.

Curriculum Matched Skills

Mathematics – Subtract within 10

Mathematics – Successor/Predecessor Number Relationships

Mathematics – Fact Fluency and Recall

Mathematics – Vertical Arithmetic Alignment

This worksheet is part of our Subtract by 0s and 1s Worksheets collection.