vadesha's math cross word puzzle

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Across
  1. 2. surface shape
  2. 3. symbol(usually a letter)
  3. 6. factor:a number used as a multiplier in scaling
  4. 7. number:number that can be expressed as an integer
  5. 8. you have a number sentence without an equal sign.
Down
  1. 1. you have a number sentence without an equal sign.
  2. 4. of mathematics in which letters and other symbols
  3. 5. a three-dimensional object as measured in cubic units
  4. 9. Numerical data.