Vertical Subtraction by 9s

This subtraction worksheet gives students structured practice subtracting 9 from teen numbers using a clear vertical format. Learners work through a full set of problems designed to build accuracy, fluency, and confidence with one of the most challenging subtraction fact families.

Instructional Objectives

• Skill Focus (Grades 1-2): Subtract 9 from numbers within 20 using correct vertical subtraction.
• Conceptual Understanding (Grades 1-2): Strengthen number sense by recognizing how subtracting 9 relates to subtracting 10 and adding 1 back.
• Algebraic Reasoning (Grade 2): Apply efficient counting-back and compensation strategies to solve subtraction facts involving 9.
• Curriculum Alignment (Grades 1-2): Supports subtraction fact fluency, mental math techniques, place-value awareness, and operational fluency standards.

The vertical layout encourages proper alignment and careful computation, helping students avoid common errors. Repeated exposure to subtracting 9 supports pattern recognition and the development of efficient mental strategies.

Learning Benefits

• Builds fluency and confidence with subtraction facts involving 9
• Reinforces mental math strategies and number relationships
• Strengthens accuracy through structured vertical computation
• Effective for independent practice, review, or intervention

This printable worksheet provides focused, supportive practice that helps students master subtracting 9 from teen numbers while strengthening number sense and subtraction fluency.

This worksheet is part of our Subtract by 8s and 9s Worksheets collection.