Mathematical Problems

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Across
  1. 2. In this mathematical operation, we use this symbol: 'x'
  2. 5. Eight ... six equals forty-five
  3. 6. Twenty ... five equals five
  4. 9. Verb linked to 'division'
  5. 11. In this mathematical operation, we use this symbol: '+'
  6. 12. Fourteen ... seven equals twenty-one
Down
  1. 1. In this mathematical operation, we use this symbol: '-'
  2. 3. Verb linked to 'subtraction'
  3. 4. Verb linked to 'multiplication'
  4. 7. In this mathematical operation, we use this symbol: ':'
  5. 8. Verb linked to 'addition'
  6. 10. Thirty-five ... fifteen equals twenty