Addition Skill Builder

This printable math worksheet is designed to help students in Grades 1 and 2 build strong addition fluency, number sense, mental math strategies, fact recall, and computational confidence through focused practice with mixed addition facts within 20. Students solve thirty horizontal addition equations by filling in the missing totals, encouraging careful computation and efficient thinking as they apply strategies such as counting on, doubles, and making tens.

Skills Reinforced

• Addition Within 20 (Grades 1-2)
  Strengthen accuracy and confidence with single-digit sums through repeated, structured practice.
• Mental Math Strategies
  Encourage flexible approaches such as counting on, doubles facts, and composing tens.
• Fluency with Mixed Addition Facts
  Build smoother, faster computation by working with a variety of addend combinations.
• Number Sense & Fact Recall
  Reinforce understanding of how numbers relate while developing automatic recall of basic facts.

Instructional Benefits

• Teacher-Created Resource
  Designed by educators to align with early elementary math standards.
• Clear Horizontal Format
  Keeps focus on computation and supports independent problem solving.
• Manageable Practice Set
  Thirty problems provide meaningful repetition without overwhelming learners.
• Flexible Use Options
  Ideal for classwork, homework, math centers, review, or skill reinforcement.

This addition skill builder worksheet helps students develop addition accuracy, mental math fluency, number relationships, fact mastery, and math confidence. With consistent formatting and purposeful repetition, learners gain the foundation needed for more advanced addition and subtraction tasks. Whether used in a classroom or homeschool setting, this no-prep worksheet offers effective practice that supports lasting success in early mathematics.

This worksheet is part of our Mixed Addition Facts Worksheets collection.