Addition and subtraction within 20 worksheets for 1st grade

Fluency with addition and subtraction within 20 is one of the most important goals of 1st grade. It is what later two-digit work is built on.

This pack has 20 pages in order: addition, subtraction, mixed practice, then missing numbers. Mixed pages make children read each sign carefully, and missing-number pages build the link between addition and subtraction. Every page has room for a name, date and score, and the answer key makes checking quick.

The $1 seasonal single pages below are an easy way to add a little variety.

What you get

The pack is a US Letter PDF (A4 works with fit to page): 20 practice pages, a 20-page answer key, a how-to page with tips for parents and teachers, a color-in progress tracker and a cover page. Download it right after checkout and print as many copies as you need for your family or one classroom.

Tips

• Teach 'make ten': 8 + 5 is 8 + 2 + 3.
• Practice fact families together: 6 + 7, 7 + 6, 13 - 6, 13 - 7.
• Circle the operation sign before starting mixed pages.