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➕ 1st grade math · Add & Subtract

Add three numbers

Add two numbers, then add the third. Look for a double, like 4 + 4, or two numbers that make 10.

Worked example

Add the three numbers: 2 + 1 + 4 = ?
Answer: 7
Add the first two: 2 + 1 = 3. Then add 4: 3 + 4 = 7. Answer: 7.

For grown-ups: Three addends. Below: three problems to try with the worked answers, and a free printable sheet. Children can practise the same skill as a game, with no sign-up and no ads.

  • CCSS 1.OA.A.2
What this practises, for teachers

Practices three addends (1.OA.A.2). A printable sheet with its answer key, worked answers on the page, no accounts.

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For your class

🖨️ Printable sheet and key

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More printables, with answer keys, for this grade:

Try three

  1. Add the three numbers: 3 + 2 + 4 = ?
    Show the answer and how
    Answer: 9
    Add the first two: 3 + 2 = 5. Then add 4: 5 + 4 = 9. Answer: 9.
  2. Add the three numbers: 3 + 6 + 1 = ?
    Show the answer and how
    Answer: 10
    Add the first two: 3 + 6 = 9. Then add 1: 9 + 1 = 10. Answer: 10.
  3. Add the three numbers: 5 + 1 + 2 = ?
    Show the answer and how
    Answer: 8
    Add the first two: 5 + 1 = 6. Then add 2: 6 + 2 = 8. Answer: 8.

Before and after

Learn first: Story problems to 20 (1st)

Name: ____________________Date: ____________Score: ____ / 12

Add three numbers (1st grade)

  1. Add the three numbers: 5 + 1 + 4 = ?
  2. Add the three numbers: 2 + 2 + 6 = ?
  3. Add the three numbers: 3 + 4 + 3 = ?
  4. Add the three numbers: 1 + 1 + 8 = ?
  5. Add the three numbers: 2 + 3 + 5 = ?
  6. Add the three numbers: 1 + 2 + 5 = ?
  7. Add the three numbers: 3 + 1 + 1 = ?
  8. Add the three numbers: 1 + 4 + 2 = ?
  9. Add the three numbers: 2 + 7 + 1 = ?
  10. Add the three numbers: 4 + 2 + 3 = ?
  11. Add the three numbers: 4 + 7 + 3 = ?
  12. Add the three numbers: 3 + 3 + 9 = ?

Answer key

  1. 10
  2. 10
  3. 10
  4. 10
  5. 10
  6. 8
  7. 5
  8. 7
  9. 10
  10. 9
  11. 14
  12. 15

More 1st grade skills: all 1st grade math skills, or every grade at math skills.