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1st Grade Doubles Plus One worksheets

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Doubles Plus One

Grade 1 Math Worksheet

NameDate

Write the answer on the line.

  1. 8 + 9 =

  2. 9 + 10 =

  3. 4 + 5 =

  4. 7 + 8 =

  5. 7 + 6 =

  6. 3 + 4 =

  7. 1 + 2 =

  8. 10 + 9 =

  9. 2 + 3 =

  10. 6 + 5 =

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1st Grade Doubles Plus One worksheet 1 – printable PDF
Download PDF: 123456

About this worksheet

Doubles plus one, also called near doubles, is a strategy for adding two numbers that are one apart, such as 6 + 7. A child who knows that 6 + 6 is 12 can add one more to get 13. This turns a fact that is hard to remember into one that is easy to work out. On this grade 1 worksheet each line is an addition sentence made of two numbers that are one apart, such as 5 + 6 or 8 + 7, and your child writes the sum on the line.

Support sheets keep the totals to 11 or less, standard sheets use numbers up to 9, and challenge sheets use the larger near doubles. Ask your child which double is closest, then add one.

What your child will learn

  • Spot two numbers that are one apart
  • Use a double you know to add a near double
  • Add one more to a double
  • Write a sum on a line

Common Core standard: 1.OA.C.6

Worked example

For 6 + 7, think 6 + 6 = 12. 7 is one more than 6, so the answer is one more than 12. Write 13.

Common mistake

Using the double but forgetting to add the extra one, so writing 12 for 6 + 7.

Helpful hint

Find the double inside it, then add one more.

Questions parents ask

What is the most common mistake with doubles plus one?

Using the double but forgetting to add the extra one, so writing 12 for 6 + 7.

How can I help my child with doubles plus one?

Find the double inside it, then add one more.

Are these 1st grade math worksheets free to print?

Yes. All 6 printable versions on this page are free to download and print, with no account needed.

Similar: Addition Within 10 · Addition Within 20

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