Single digit addition worksheets
Twenty-five basic addition facts in big, friendly type — the very first worksheet format.
Best fit: K–1st grade · 8 sheets, answer keys included · Free, no sign-up
The full set: 8 worksheets with answer keys
Eight sheets in the same layout with different problems: download them as one PDF or print one at a time.
Worksheets
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Sheet 1
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Sheet 2
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Sheet 3
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Sheet 4
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Sheet 5
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Sheet 6
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Sheet 7
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Sheet 8
Answer keys
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Sheet 1 answers
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Sheet 2 answers
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Sheet 3 answers
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Sheet 4 answers
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Sheet 5 answers
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Sheet 6 answers
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Sheet 7 answers
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Sheet 8 answers
About these worksheets
Single-digit sums are the first written math most children meet, so these sheets keep everything gentle: 25 problems a page, large type, plenty of white space, and the familiar vertical layout they’ll use for years. Sums stay within 18 (9 + 9). Pair them with ten frames or a number line so the strategies stay visual while the facts become automatic.
Need more sheets?
The generator makes new versions of this worksheet: choose the operation and the number of digits, and every click is a new sheet with its own answer key.
Frequently asked questions
What ages are these addition facts for?
Kindergarten and 1st grade, or any child working on addition facts within 20 for the first time.
Should children count on fingers?
Early on, yes — fingers, counters and ten frames are how the facts get built. Fluency comes from repetition after understanding, not instead of it.
How should we use the 8 sheets?
One sheet a day is plenty at this age. Keep counters or a ten frame on the table for the first few, then try a sheet without them and check it against its key.