Math Puzzle

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Across
  1. 3. 8x16/2
  2. 7. 5x4.5x2
  3. 8. 35-25+2
  4. 9. 60+8-44
  5. 10. 2.5 x 4
Down
  1. 1. 22.5 x 4
  2. 2. 500/5
  3. 4. 8+20-12
  4. 5. 21/3
  5. 6. 2x16-32
  6. 8. 900/100-6