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Updated: October 2026
A comprehensive Grade 1 subtraction worksheet featuring 30 vertical problems within the 1-20 range. Perfect for developing basic arithmetic fluency and mental math skills.
Strengthen your student’s mathematical foundation with our specially designed Subtraction Within 20 worksheet. This practice sheet is tailored for Grade 1 learners who are beginning to move beyond single-digit subtraction. By focusing on numbers up to 20, students bridge the gap between simple counting and more advanced mental arithmetic.
This worksheet contains 30 subtraction problems presented in a clear, vertical format. The layout reduces visual clutter so students can focus on one problem at a time. Problems range from simple equations like 5 − 4 to more challenging ones such as 20 − 17, providing balanced practice across difficulty levels.
Simply download the PDF and print it. For extra practice, use the “Open Online Generator” to create new versions of this worksheet, so students always have fresh problems to solve. Whether you are a teacher or a parent, this printable is an excellent tool for boosting math confidence and independence.
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