Missing addends to 20 Addition within 20 Math facts fluency timed tests practice

Build math confidence with these Missing addends to 20 Addition within 20 Math facts fluency timed tests practice! Designed as timed math fact fluency assessments, this packet helps students strengthen their addition within 20 skills in a fun and structured way.

Perfect for 1st grade, 2nd grade, or homeschool math, these worksheets make it easy for teachers to assess fact fluency, track progress, and provide engaging fall activities or year-round practice. Students will solve missing addends to 20 and addition within 20 problems to improve speed, accuracy, and math confidence.

What’s Included:

• 80 worksheets in total
• 80 answer key pages
• 4 sets (30 questions x 20 worksheets per set)
• Format: PDF + Google Slides

Note: Access the Google Drive link within the PDF file on page 2.

Skills Covered:

• Addition within 20
• Missing addends to 20
• Math fact fluency
• Timed tests for practice & assessment

These worksheets are flexible and can be used for independent practice, math centers, small groups, homework, or timed math tests. With an autumn theme, they also make perfect seasonal fact fluency activities.

Help your students master first grade math fact fluency with this ready-to-use packet that saves you prep time and boosts student success!