Turn any addition worksheet into flashcards with answers
Skip the generic printable. Upload your own sums, notes or a photo of the page, and get addition flashcards from 1 to 20 with the answers filled in.
Why generate your own addition cards
Drilling sums up to 20 works best when the cards match the problems you actually have to solve, and a generic printable may not. Printable addition flashcards 1 to 20 with answers made from your own worksheet cover the same facts your teacher assigned.
- Start with doubles such as 6 + 6 and make-ten pairs such as 7 + 3, since they unlock many other sums.
- Practice in short sessions of 5 to 10 minutes each day rather than one long drill.
- Say each answer aloud before flipping the card, so you practice recall instead of recognition.
- Shuffle the cards so sums from 1 to 20 appear in random order on test day.
Built from your material
Upload a PDF, DOCX, slide deck, plain notes or a photo of a worksheet. Text recognition reads photos of pages, so your teacher's exact problems become the cards.
Answers on every card
Each flashcard shows the sum on the front and the correct total on the back, so you can check yourself without flipping to a separate answer key.
Spaced repetition
Cards you miss come back sooner and easy ones fade out, so the sums that keep tripping you up get the most practice.
How it works
Upload your sheet
Add the worksheet, notes or a photo of the page. No credit card is needed to start.
Review the cards
Study the generated addition flashcards in your browser on the free plan, three generations a month.
Export on Plus
Plus adds PDF export so you can print your own cards, along with DOCX, Anki and CSV export.
Building a card for each sum from 1 to 20 by hand takes longer than most students want to spend. DeckOwl reads your material and writes the front and back of each card, then schedules reviews so the hardest sums appear more often.
Printing is a Plus feature, so if you only need the cards on screen, the free plan covers that. Plus is $99.90 a year or $9.99 a month, and students get 40% off with a school email.
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Frequently asked questions
Which addition facts from 1 to 20 should I memorize first?
Start with doubles like 4 + 4 and 9 + 9, then make-ten pairs like 6 + 4 that equal 10. Once those are automatic, sums that cross 10, such as 8 + 7, become much easier to work out.
How often should I review addition flashcards?
Short daily sessions of 5 to 10 minutes work better than one long drill each week. Reviewing a few cards every day keeps the sums fresh and makes recall faster.
Can I print DeckOwl flashcards?
The free plan lets you study in the browser but does not include exports. PDF export is part of Plus, which costs $99.90 a year or $9.99 a month.
Do I need a credit card to try DeckOwl?
No, you can start without a credit card. Students get 40% off with a school email.
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