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Teen numbers plus ones worksheets Grade 1

Add ones to a teen number: the ten stays and the ones are added.

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

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How to do it

Add the ones. The ten stays: 13 + 4 = 17.

15+4=10+5+4=10+9=1915 + 4 = 10 + 5 + 4 = 10 + 9 = 19add the ones; the ten stays

Example problems

  1. 14+5=14 + 5 =
  2. 16+3=16 + 3 =
  3. 13+2=13 + 2 =
  4. 12+4=12 + 4 =

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