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Adding three numbers worksheets Grade 1

Add three one-digit numbers by finding two that make 10 first.

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Free · Worked example · 54 problems · Answer key · US Letter

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How to do it

Look for two numbers that make 10. Add those first.

6+3+9=9+9=186 + 3 + 9 = 9 + 9 = 18add the first two, then the third

Example problems

  1. 6+5+2=6 + 5 + 2 =
  2. 7+2+3=7 + 2 + 3 =
  3. 4+9+2=4 + 9 + 2 =
  4. 8+1+3=8 + 1 + 3 =

Addition facts within 20

  1. Adding 4 within 20
  2. Adding 5 within 20
  3. Adding 6 within 20
  4. Adding 7 within 20
  5. Adding 8 within 20
  6. Adding 9 within 20
  7. Doubles and near doubles
  8. Teen numbers plus ones
  9. All addition facts to 20
  10. Adding three numbers