Addition to Within 20 Math Facts Worksheets | Answer Keys Included | 1st and 2nd Grade

Addition to 20 Worksheets

This set of 17 addition worksheets gives students thorough, structured practice with adding to 20. With 20 questions per worksheet, that's 340 problems in total — plus every single worksheet comes with its own answer key, making checking work quick and completely stress-free.

Here's what's included:

• 5 worksheets covering general addition to 20
• 1 worksheet focused on adding doubles
• 11 worksheets dedicated to adding a specific number - one worksheet each for adding 0 through 10

Skills Covered:

• Addition to 20
• Adding doubles
• Adding 0 through 10
• Mental math strategies
• Number sense and math fact fluency
• Single-digit and double-digit addition

Aligned with common core standards CCSS 1.OA.B, CCSS 1.OA.C, CCSS 2.OA.B

How to Use This Set:

The general addition worksheets are perfect for mixed practice and review, helping students build speed and confidence across a range of addition facts. The doubles worksheet gives focused practice on one of the most important mental math strategies young learners need. The adding 0–10 worksheets are great for targeting specific facts — use them in order to build fluency gradually, or pull out individual sheets whenever your class needs to focus on a particular number.

Perfect For:

• 1st and 2nd grade math practice
• Homeschool math curriculum
• Morning work and math warm-ups
• Math centers and small group instruction
• Early finishers and homework
• Intervention and remediation
• Test prep and review

Clean, simple layouts keep young learners focused without unnecessary distractions, and the print-and-go format means zero prep time for busy teachers and parents. Whether you're introducing addition facts for the first time or reviewing before a test, this worksheet pack has everything you need to build strong, confident mathematicians.