Numbers

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12345678910111213
Across
  1. 4. 6+5=
  2. 6. 77-71=
  3. 7. 2x2=
  4. 9. 20-17=
  5. 10. 4x3=
  6. 11. 12-4=
  7. 13. 10-3=
Down
  1. 1. 55-50=
  2. 2. 5+5=
  3. 3. 14+1=
  4. 5. 6+3=
  5. 8. 3-2=
  6. 12. 8-6=