Tony's Crossward

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Across
  1. 3. adding a number to itself many times
  2. 5. make a copy
  3. 6. not a problem
  4. 7. copy
  5. 8. make use of something
  6. 9. helper
Down
  1. 1. clear/easy to understand
  2. 2. increase amount
  3. 4. challenge