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All addition facts to 20 worksheets Grade 1

Mixed addition facts with sums up to 20.

The front of the free all addition facts to 20 worksheet
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Free · Worked example · 46 problems · Answer key · US Letter

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How to do it

Mixed facts. Use the fastest way you know.

3+9=9+1+2=10+2=123 + 9 = 9 + 1 + 2 = 10 + 2 = 12make 10: split 3 into 1 and 2

Example problems

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

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