Grade 1 · Year 2 · Class 1 · ages 6–7

Addition within 20 worksheets.

Free printable addition within 20 worksheets with answer keys. Adding numbers with totals up to 20, including bridging through 10. Choose the level and the number of questions, then download a PDF or print.

Grade 1
Year 2 · Class 1
Ages 6–7
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Answer key
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Sheet 69358. Change the options above or make a new worksheet.

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Addition within 20

Grade 1 · Medium · 12 questions · Sheet 69358

Name Date Score / 12

1.8 + 1 =
2.12 + 7 =
3.9 + 2 =
4.7 + 5 =
5.11 + 1 =
6.7 + 6 =
7.1 + 6 =
8.17 + 1 =
9.15 + 1 =
10.18 + 1 =
11.11 + 8 =
12.3 + 4 =

About addition within 20 worksheets

Adding numbers with totals up to 20, including bridging through 10. This worksheet maker is aimed at Grade 1 (Year 2, Class 1) (ages 6–7) and makes new questions every time, with the answers worked out by a maths engine.

Teaching tip

To add 8 + 5, make 10 first (8 + 2) and then add the 3 that is left.

What the three levels look like

Easy: 4 + 8 = ___
Medium: 12 + 5 = ___
Challenge: 16 + 5 = ___

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FAQ

Addition within 20 worksheets: questions

What grade are addition within 20 worksheets for?

Addition within 20 is usually taught around Grade 1 (Year 2, Class 1), for ages 6–7. Every grade has an easy, medium and challenge level, so you can go back to an earlier level or push ahead.

Do these addition within 20 worksheets include an answer key?

Yes. Press Download PDF with the answer key switched on and the last page lists every answer. Turn the key off for a clean student copy.

Can I make a new worksheet with different questions?

Yes. Press New worksheet for a fresh set of questions. Each sheet has a sheet number printed on it; open this page with the same level, question count and number to get exactly the same sheet again.

How do I help a child who finds addition within 20 hard?

To add 8 + 5, make 10 first (8 + 2) and then add the 3 that is left. Start with the easy level, and practise a few minutes every day rather than one long session.

What is the best way to practise addition?

Short, frequent practice works best. Start with number bonds to 10, then bridging through 10, then column addition. Five to ten minutes a day is better than one long session.

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Addition within 20 (Grade 1): Adding numbers with totals up to 20, including bridging through 10. Open the practice page or print a worksheet.

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