Crossword puzzle on mathematical operations1

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Across
  1. 4. The result of dividing one quantity by another.
  2. 7. The result of dividing one quantity by another.
  3. 8. Mathematical operation that combines two quantities to find a third one.
  4. 9. Operation that involves determining how many times one number can be subtracted from another.
Down
  1. 1. The result of adding two or more numbers.
  2. 2. Mathematical operation represented by the symbol "x".
  3. 3. - Operation that involves finding the total of two or more numbers.
  4. 5. Operation that involves finding the difference between two quantities.
  5. 6. A mathematical symbol indicating "less than".