Fifth great lesson

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Across
  1. 3. to add to numbers to make a sum
  2. 4. to take away
  3. 5. greater than less
  4. 6. a different way of adding
  5. 8. not as much
  6. 10. mathematics
Down
  1. 1. the answer of a multiplication problem
  2. 2. to separate into parts
  3. 4. to take away
  4. 7. a small number
  5. 9. the answer of an addition problem
  6. 11. to bring more