Turn addition and subtraction worksheets into printable flash cards
Upload a worksheet, slide deck, or photo of a page and get addition and subtraction flash cards built from your own material.
Custom printable flash cards for addition and subtraction
Most worksheet packs stop at sums under 20, but a homework set may need regrouping across three-digit numbers. Ready-made free printable flash cards for addition and subtraction rarely match what a class is working on. DeckOwl reads your own page, slide, or note and writes the cards from it.
- Generate cards from your own worksheet, slide, or photo of a page
- Spaced repetition brings back the facts you keep missing
- PDF and Anki export are on Plus; the free plan studies in the browser
- Students get 40% off with a school email, and no credit card is needed to start
Reads your pages
Upload PDFs, slides, notes, or photos. Text in photos is read with text recognition.
Spaced repetition
Cards you miss come back more often, so the facts you find hard get more practice.
Printable on Plus
PDF, DOCX, Anki, and CSV export are included with Plus for printing and offline review.
How it works
Upload your material
Add a PDF, DOCX, PPTX, text notes, or a photo of a worksheet page.
Review the cards
Check the questions and answers DeckOwl wrote from your pages.
Study or export
Practice in the browser on the free plan, or export a printable PDF on Plus.
Upload a PDF of your worksheet, a photo of the board, or a DOCX of your notes. Each card has a question on the front and the answer on the back, and spaced repetition brings back the facts that need more practice.
Printing the deck as a PDF requires the Plus plan at $39/year or $7.99/month. The free plan gives you 3 generations a month and lets you study in the browser.
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Frequently asked questions
How many addition and subtraction facts should one flash card set cover?
Start with one fact family at a time, such as sums to 10, and add larger numbers once those feel automatic. Short daily practice usually works better than one long session.
Should students learn addition facts before subtraction?
Most curricula introduce them together, since subtraction undoes addition and fact families show that link. Practicing both from the same three numbers helps students see the relationship.
Can I print the flash cards DeckOwl makes?
Yes, PDF export is included with Plus at $39/year or $7.99/month. The free plan includes 3 generations a month and studying in the browser, but not exports.
Can I start for free without a credit card?
Yes, the free plan needs no credit card and includes 3 generations per month. Students with a school email get 40% off Plus.
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