Turn your own worksheets into number bonds flashcards
Skip the generic printable. DeckOwl turns your own notes, slides, or worksheet photos into flashcards that repeat on a spaced schedule.
Why generate your own number bonds cards
Printable number bonds sheets are handy, but a generic set rarely matches what your class is working on this week. DeckOwl builds number bonds flashcards from the material you already have, such as a worksheet photo, a slide deck, or typed notes.
- Works from worksheet photos, PDFs, slides, and notes
- Cards cover bonds to 5, 10, 20, and matching subtraction facts
- Spaced repetition brings back the pairs a student misses
- Free plan to start, with no credit card required
Starts from your material
Upload a worksheet photo, a teacher's slides, or typed notes, and the cards match what your class is practicing this week.
Spaced repetition built in
Missed pairs come back sooner, so number bonds stick without a stack of paper to reshuffle each night.
Free to try
Start without a credit card. Free accounts get 3 generations a month and study right in the browser.
How it works
Upload your pages
Add a PDF, DOCX, PPTX, text file, or a photo of the page. Photos are read with text recognition.
Review the generated cards
Check the pairs that make each target, such as 7 and 3 making 10, and edit anything that does not match your lesson.
Study on a schedule
Practice in the browser each day, and let spaced repetition bring back the facts you miss most.
The AI reads each problem and writes cards for the pairs that make a whole, like 8 and 2 making 10, plus the matching subtraction facts. Those related facts reinforce each other, so children recall them faster than they would from isolated sums.
Free accounts get 3 generations a month and study in the browser. PDF printing, along with Anki and CSV export, is included in Plus at $39/year or $7.99/month.
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Frequently asked questions
How do number bonds help with addition facts?
They show that a whole breaks into two parts, such as 8 + 2 = 10, so children learn related facts together. Practicing both directions, like 10 - 8 = 2, builds fluency faster than memorizing single sums.
Which number bonds should a first grader learn first?
Start with bonds to 5, then bonds to 10, since these combinations show up in almost every later addition and subtraction problem. Move on to bonds to 20 once the earlier pairs come quickly.
Can I print my number bonds flashcards for free?
Free accounts can study the cards in the browser, but PDF printing is a Plus feature. You can use the 3 free monthly generations to test the cards on your own material first.
Do I need a credit card to start?
No. You can create an account and generate cards without a credit card, and students get 40% off with a school email.
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