Mixed Differences

This subtraction worksheet provides focused fluency practice with horizontal subtraction equations involving 8 and 9. Students compute the missing differences using mental subtraction strategies, strengthening accuracy, confidence, and understanding of number relationships.

Instructional Objectives

• Skill Focus (Grades 1-2): Solve horizontal subtraction equations involving 8s and 9s within 20.
• Conceptual Understanding (Grades 1-2): Develop number sense by recognizing patterns and relationships when subtracting larger single-digit values.
• Algebraic Reasoning (Grade 2): Apply mental math strategies to determine unknown results efficiently.
• Curriculum Alignment (Grades 1-2): Supports subtraction fluency, mental math reasoning, number relationships, and solving horizontal equations.

The horizontal format encourages students to rely on mental computation rather than procedural setup, helping them internalize subtraction strategies. Repeated exposure to 8s and 9s builds fluency with fact families that often require more advanced counting-back skills.

Learning Benefits

• Builds speed and confidence with challenging subtraction facts
• Strengthens mental math and reasoning skills
• Reinforces understanding of number relationships
• Ideal for warm-ups, fluency practice, or quick reviews

This printable worksheet delivers efficient, confidence-building practice that helps students master mixed subtraction differences with 8s and 9s while strengthening mental math fluency and foundational subtraction skills.

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