Missing Addends to 20 is a fun and effective way to help student's 1st grade build strong addition skills and math fact fluency. These math fact fluency worksheets give students repeated practice solving addition equations when one addend is missing, helping them develop number sense and confidence with addition within 20 practices.

This resource includes three styles of missing addends practice with a cute fox theme and consistent layout: missing first addends, missing second addends, and mixed missing addends. By working with different equation formats, students learn that addition equations can be solved even when a number is missing — an important foundation for algebraic thinking.

Plus:

Looking for complete math fact practice? Pair this set with Missing Number in Subtraction to 20 (Cute fox theme) for coordinated subtraction practice in the same cute fox theme.

This Set Includes:

1). 40 printable pages:

• Missing First Addends – 5 worksheet pages + 5 answer key pages
• Missing Second Addends – 5 worksheet pages + 5 answer key pages
• Mixed Missing Addends (First & Second Position) – 10 worksheet pages + 10 answer key pages
• Each worksheet includes 16 problems. Some equations are repeated to reinforce addition facts and support math fact fluency.

2). Design theme:

• Cute fox-themed worksheets

3). File formats

• PDF for easy printing
• Color: black and white outline style.
• Page size: 8.5" x 11" (vertical layout)

Perfect for:

• Math practice for grade 1 and early grade 2.
• Math centers and small group instruction
• Independent practice or morning work
• Homework or extra practice
• Intervention and review
• Teachers looking for effective addition to 20 practice materials

Terms of Use:

This resource is licensed for personal use by a single teacher or parent for their own students or children. Duplication for colleagues, posting online (including shared drives), reselling, or altering the file for distribution in any form is not permitted.

If others wish to use this resource, please direct them to my shop so they can purchase their own license. Thank you for supporting creator and respecting the time and effort that goes into making these materials.

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