Free Subtraction Within 20 Worksheet - 28
If this specific number range feels too easy or too hard, the hub page above lists every other skill available at Grade 1 for Subtraction, so it's easy to move up or down without hunting through menus.
Within 20 is one of the skills researched specifically for Grade 1's math curriculum — the range here is drawn from the Common Core K-5 progression and cross-checked against what established publishers put in front of students at this level.
For extra practice on this exact skill, print a few different numbered variants rather than repeating this one page — each uses a different set of numbers while testing the identical Within 20 rule.
Frequently asked questions
The range researched specifically for Within 20 Subtraction at Grade 1, matching the Common Core K-5 progression rather than a generic difficulty guess.
This exact page always shows the same numbers (so it's stable for bookmarking or sharing), but the hub page above links to dozens of other numbered variants testing the identical Within 20 skill with fresh numbers.
Both Letter and A4 are supported automatically — nothing to configure, the same PDF prints correctly on either page size.
