Addition within 20 Worksheets
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Math Worksheets
Lessons for First Grade
Free Printable Worksheets
Printable “1-digit Addition” worksheets:
Addition within 10 (eg. 3 + 5)
Addition within 20 (eg. 6 + 8)
Mixed Single Digit Addition
Sums across 10
Addition within 20 Worksheets
Learn addition with sums within 20.
First Grade worksheets to help students learn addition facts within 20. Practice single-digit addition with sums less than 20. Students can start with strategies like counting fingers, counting on or number bonds. With practice, they should be able to do the sums in their heads.
Lesson Objective:
- Learn addition facts with sums less than or equal to 20.
Click on the following worksheet to get a printable pdf document.
Scroll down the page for more Addition within 20 Worksheets.
More Addition within 20 Worksheets
Add, then write the missing number.
(Answers on the second page)
Addition within 20 Worksheet #1
Addition within 20 Worksheet #2
Addition within 20 Worksheet #1 (Interactive)
Addition within 20 Worksheet #2 (Interactive)
Related Worksheets
Addition within 10 (eg. 3 + 5)
Mixed Single Digit Addition
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