Adding and Subtracting Written 10-20

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Across
  1. 5. 18-5=
  2. 8. 7+11=
  3. 9. 7+10=
  4. 11. 9+2=
Down
  1. 1. 6+9=
  2. 2. 8+4=
  3. 3. 27-13=
  4. 4. 8+8=
  5. 6. 30-10=
  6. 7. 20-1=
  7. 10. 19-9=