Turn any addition worksheet into free flashcards for 0 to 20
Skip the generic printable sheet. Upload a worksheet photo, a PDF or typed notes and get flashcards for the exact facts you are practicing, with spaced repetition built in.
Why a custom deck beats a generic printable
Printable addition sheets for 0 to 20 are everywhere, but they rarely match the facts your child is practicing this week. DeckOwl builds free addition flashcards for 0 to 20 from whatever you already have, whether that is a worksheet photo, a teacher's PDF or typed notes.
- Works from a photo of a worksheet, not just typed text
- Cards cover only the problems on your own material
- Spaced repetition focuses practice on the facts still being missed
- Free plan includes 3 generations per month and browser study
Built from your material
Upload a worksheet, teacher PDF, slide deck or photo of a page. Text recognition reads it and turns the facts into cards.
Spaced repetition
Cards you miss come back sooner, and the ones you know well are spaced further apart so practice goes where it is needed.
Study in the browser
The free plan lets you study on any device with a browser, with 3 generations per month and no card needed to start.
How it works
Add your sheet or notes
Upload a PDF, DOCX, PPTX, text file or a photo of the worksheet showing addition problems from 0 to 20.
Generate your flashcards
DeckOwl pulls out the facts and writes a question on the front and the answer on the back of each card.
Practice until it sticks
Study in the browser and let spaced repetition bring back the facts you keep missing.
Repetition does most of the work with addition facts. Spaced repetition brings back the cards you miss more often and spaces out the ones you already know, so 8 + 6 gets more practice than 3 + 1 until it sticks. The free plan covers 3 generations per month and browser study; exporting to PDF or CSV for printing is part of Plus.
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Frequently asked questions
What addition facts should a child learn first from 0 to 20?
Start with adding 0 and 1, then doubles like 4 + 4 and 7 + 7, since these build the base for near-doubles and make-a-ten strategies. Move on to sums that cross 10, such as 8 + 5, once the easier facts come quickly.
How many addition flashcards should I make for one practice session?
Ten to twenty cards is a manageable session for most children, and it helps to repeat the same set across several short days. Spaced repetition will decide which cards come back more often as they learn them.
Is DeckOwl free to use for addition flashcards?
Yes, the free plan includes 3 generations per month and studying in the browser. No credit card is needed to start.
Can I export addition flashcards to print them?
Printing needs an export, and PDF, DOCX, Anki and CSV exports are included with the Plus plan at $99.90/year or $9.99/month. Students with a school email get 40% off.
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