Math Crossword

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Across
  1. 2. the dot between numbers
  2. 3. the opposite of subtraction
  3. 4. any number above zero
  4. 7. the opposite of division
  5. 8. one number over another number
Down
  1. 1. any number below zero
  2. 5. the opposite of addition
  3. 6. the opposite of multiplication