Numbers

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12345678
Across
  1. 2. six+six=?
  2. 3. eight-three=?
  3. 4. nine-nine=?
  4. 5. one+seven=?
  5. 8. two+two=?
Down
  1. 1. four+five=?
  2. 2. nine-two=?
  3. 3. zero+one=?
  4. 6. four-two=?
  5. 7. one+two=?