Addition facts worksheets

Addition facts are the single-digit sums up to 20, like 8 + 6 or 9 + 7. Knowing them by heart frees your child to focus on bigger problems later.

Download the free addition facts worksheet (PDF)

What’s on the worksheet

• 50 questions on addition facts, sized for US Letter paper
• 2 pages of questions plus an answer key on the last page
• Written for grades 1–2, matching Common Core 1.OA.C.6, 2.OA.B.2
• Name and date lines at the top, and room to show the work

Sample questions from this worksheet

1. 18 + 2 =
2. 5 + 14 =
3. 5 + 9 =
4. 7 + 2 =
5. 13 + 3 =
6. 19 + 1 =

Preview the worksheet and answer key

Make a new addition facts worksheet

Need another page for extra practice, a retake or a second group in class? The free Mathify Kids test maker builds a fresh addition facts worksheet with different numbers every time. Choose Core, Standard or Challenge level, print it with its own answer key, or let your child take it on screen and see the score straight away.

Make a new version

Addition facts: a worked example (8 + 6)

How to use it at home and in class

At home

Do the sheet once untimed for accuracy. Then repeat it on another day and try to beat the first time. Ten problems a day works better than a whole sheet at once. Mark them together with the answer key, then ask your child to explain one they got wrong: finding the mistake themselves is where the learning happens.

In class

Use the first row as a warm-up, a full page for independent practice, or five questions as an exit ticket. For a retake or a second group, make a new version with the test maker so every child gets different numbers.

Mistakes to watch for

• Counting on fingers from 1 every time instead of starting from the bigger number.
• Mixing up facts that look alike, like 7 + 8 and 7 + 6.

What to practice before and after addition facts

• After: 2-digit addition, once this one is mostly right.
• Learn it first: the addition facts lesson and the addition chart.