Math Crossword Puzzle

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Across
  1. 3. One thing minus another
  2. 5. One thing plus another
  3. 9. Repeated Addition
  4. 10. A set of numbers and symbols arranged in rows and columns
Down
  1. 1. A quantity representing the power to a base
  2. 2. Part of a whole
  3. 4. A quantity that can be changed and is not fixed
  4. 6. An operating ending with an equal sign
  5. 7. The dot separating the ones and tenths place
  6. 8. Repeated Subtraction