Horizontal Addition Facts

This printable math worksheet is designed to help students in Grades 1 and 2 strengthen addition fact fluency, mental math strategies, number sense, and computational confidence through focused practice with +8 and +9 facts. All problems are written in a horizontal format, encouraging students to compute mentally and rely on efficient strategies rather than vertical stacking.

Learning Goals

• Single-Digit Addition Fluency (Grades 1-2)
  Build speed and accuracy when adding 8 and 9 to single-digit numbers.
• Mental Math Strategies
  Encourage efficient thinking such as counting on, near doubles, and tens-based reasoning.
• Number Patterns & Relationships
  Help students recognize consistent patterns within the +8 and +9 fact families.
• Addition Within 20
  Strengthen mastery of sums up to 20 through repeated practice.

Instructional Benefits

• Teacher-Created Resource
  Designed by educators to align with early elementary math standards.
• Horizontal, Less-Scaffolded Layout
  Promotes flexible thinking and independent computation.
• Fluency-Focused Practice
  Supports building speed and precision essential for later multi-digit addition.
• Flexible Classroom Use
  Ideal for warm-ups, independent practice, homework, math centers, or skill review.

This horizontal addition worksheet helps students develop fact mastery, mental computation efficiency, accuracy, and math confidence with +8 and +9 facts. Through consistent, targeted practice, learners build the foundational skills needed for future arithmetic success. Whether used in a classroom or homeschool setting, this no-prep worksheet provides effective fluency practice that supports long-term growth in mathematics.

This worksheet is part of our Addition Facts With 8 and 9 Worksheets collection.