Addition and Subtraction Worksheets: Within 10 and 20, 2 and 3 Digit, With and Without Regrouping, Answer Key, K-3 Printable PDF

Addition and subtraction worksheets from kindergarten to grade 3: math facts within 10 and 20, then 2- and 3-digit problems with and without regrouping, with a full answer key. PDF in US Letter and A4, in color and in a low-ink version.

★ WHAT YOU GET
• Add and subtract within 10 (4 pages, K.OA.A.5) and within 20 (4 pages, 1.OA.C.6 / 2.OA.B.2), 20 problems per page.
• 2 missing number pages within 20 (1.OA.D.8).
• Vertical problems, 15 per page: 2-digit without regrouping (4 pages, 1.NBT.C.4), with regrouping (4 pages, 2.NBT.B.5) and 3-digit with regrouping (4 pages, 2.NBT.B.7 / 3.NBT.A.2).
• A review page, a "My Progress" tracker and a certificate.
• Answer key for every page (23 pages).
• Everything in two versions: color and low-ink (white background, mostly outlines).
• 25 worksheets + 23 answer key pages per size, in 8 PDFs (US Letter and A4) inside one ZIP.

★ GOOD TO KNOW
• This is a digital download: nothing is shipped.
• The PDFs are not editable: students fill them in by hand after printing.
• Every problem and answer was checked one by one by a program.
• Colors may look slightly different depending on your screen and printer.
• Downloading works best from a web browser rather than the Etsy app.

★ LICENSE
You may use the files for personal use and in your own business. Teachers may also use and print the worksheets for their own students in class: print as many copies as you need for your class and hand them out to your students. Each license covers one buyer: every teacher, school or business needs to buy its own copy. You may not resell the files or printed copies of them, or share or redistribute the digital files in whole or in part. That includes emailing them to other people or uploading them to shared folders, websites or learning platforms.

★ RETURNS
Because this is a digital file, returns are not accepted. If a file will not download or open, message me within 14 days and I will help or refund you.

★ AI USE
The page titles and text and this listing were written with the help of an AI writing tool, then reviewed and laid out by Ametla Studio. The problems were generated by a program and all checked automatically. The designs, icons and listing images were made by Ametla Studio with code; no AI-generated images were used.