Build addition fluency and strengthen number sense with these Missing Addends to 20 worksheets! These addition facts practice worksheets are perfect for helping students master basic math skills, complete equations, and develop confidence in mental math. With fun visuals on every page, this resource makes math fluency practice engaging and stress-free for learners.

Included are

• Missing Addends to 20 worksheets
• Answer key for easy grading
• Printable, no prep pages
• Cute math themes to keep students engaged

Key Features

• Addition within 20
• Find the missing number
• Improves math fluency & fact recall
• Clear layout for independent practice
• Great for centers, homework, or morning work

Benefit

Students will improve their mental math skills, understand addition equations, and build automaticity in solving addition facts within 20. Teachers save planning time with ready-to-use worksheets and answer keys included.

This resource can be used for

• Math review
• Daily practice / warm-ups
• Intervention & RTI support
• Small group or 1:1 teaching
• Homework / assessments
• Math centers & quizzes

Why You Will Love This Resource

Because it turns basic addition practice into fun and structured learning! The worksheets are easy to use, engaging for students, and perfect for building fluency with no extra prep—just print and teach!

🔹 Suitable Grade Levels

Kindergarten, Grade 1 & Grade 2

🔹 Common Core State Standards

This resource aligns with:
• CCSS.MATH.CONTENT.K.OA.A.5 – Fluently add within 5
• CCSS.MATH.CONTENT.1.OA.B.3 – Apply properties of operations
• CCSS.MATH.CONTENT.1.OA.C.6 – Add within 20
• CCSS.MATH.CONTENT.2.OA.B.2 – Fluently add within 20