Multiples of tens

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Across
  1. 1. Sixty
  2. 2. Ten
  3. 4. Fifty
  4. 6. One-hundred
  5. 8. Thirty
  6. 9. Fourty
Down
  1. 1. Seventy
  2. 3. Eighty
  3. 5. Twenty
  4. 7. Ninety