Turn any number worksheet into flashcards for 1 to 20
Upload a worksheet, slide deck, or photo of a number chart and get flashcards that match the numbers your child is learning right now.
Why custom cards can beat a generic printable set
Many parents and teachers search for number recognition flashcards for 1 to 20 expecting a sheet to print and cut out. A generic set may show numbers the class is not working on yet, and it cannot reflect the worksheet your child brought home. DeckOwl reads your own material and builds cards that follow it.
- Study on screen in the browser, or export to Anki on Plus
- Cards cover only the range your material uses, so 1 to 20 stays on track
- Photos of worksheets are read with text recognition
- The Free plan includes 3 generations per month and no credit card is needed to start
Built from your own pages
Cards follow the exact numbers on your worksheet or chart, so practice matches what is being taught in class.
Numerals, words, and quantities
Cards can link a numeral, its number word, and a counted group, so recognition builds in more than one form.
Spaced repetition on Plus
Plus adds spaced repetition, which brings back the cards a learner misses sooner, so numbers 1 to 20 stick over time.
How it works
Upload your material
Add a PDF, DOCX, slide deck, notes, or a photo of a page. Photos are read with text recognition.
Review the cards
Check the generated cards for numbers 1 to 20 and edit any that do not match your lesson.
Study in the browser
The Free plan includes 3 generations per month and browser study. Plus adds unlimited generations, spaced repetition, and exports.
Young learners usually move through three skills: matching a numeral to a quantity, reading the number word, and placing numbers in order. Cards that mix all three, such as a counted group on one side and the numeral on the other, reinforce each skill. Short daily sessions of about ten minutes tend to work well.
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Frequently asked questions
How many number recognition cards should a child practice at once?
Ten to twelve new cards per session is a common starting point for young learners. Reviewing older cards in the same session helps earlier numbers stay fresh.
What order should numbers 1 to 20 be taught in?
Many early lessons cover 1 to 10 first and then move to 11 to 20, which follows the teen-number pattern. If your child's school has a sequence, match it so the cards line up with class.
Can I export these flashcards to print or another app?
Exports to PDF, DOCX, Anki, and CSV are part of the Plus plan, which costs $39 per year or $7.99 per month. The Free plan lets you study the cards in the browser.
Does DeckOwl work from a photo of a worksheet?
Yes, photos of pages are read with text recognition, and the cards are generated from the text it finds. Check the cards afterward to confirm the numbers are correct.
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