Addition and Subtraction Within 20 Worksheets, First Grade Math

Use these pages when your students need a little extra practice on addition and subtraction facts

within 20. The pack starts within 10 and progresses gradually, so you have the option of using a starting

point that best suits your students’ skills.

The three sections take students through visuals and number bonds before applying the knowledge of

strategies like make a ten and doubles. Students then use the knowledge to solve missing-number

problems, 12 story problems, and explaining their understanding.

Each 82-page PDF contains 60 worksheets for students, 15 answer keys pages, 6 introduction pages,

and a celebration page. Four checkpoints and one progress record help you determine which areas need

more attention. The US Letter size and A4 size versions include the same activities.

Use some of the pages for a small group activity, homework, homeschooling, or review for second

graders. You could read instructions orally or provide counters to a child needing assistance.

Print the activity sheets in black and white at actual size. This is a printable PDF. The worksheets are

not editable. One purchasing teacher may make copies for her own classroom students.