maths puzzle

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Across
  1. 2. Man's best friend
  2. 3. result of an addition
  3. 5. part of a whole
  4. 7. a devisor
  5. 10. Has a trunk
  6. 11. not odd
Down
  1. 1. answer to a multiplication
  2. 4. Large marsupial
  3. 6. line touching a circle
  4. 8. Flying mammal
  5. 9. Likes to chase mice