Danyal's Crossword

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Across
  1. 2. The opposite of subtraction
  2. 3. A single number
  3. 4. Words are numbers
  4. 8. The corner of a shape
  5. 10. The opposite of division
Down
  1. 1. Answer in a division sum
  2. 5. The lines on a shape
  3. 6. Never stop counting
  4. 7. Another word for subtraction
  5. 9. In symbol is two lines