Marius's Math Crossword - medium

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Across
  1. 2. 0+1
  2. 3. 20+20+20+2+2+2+2+1
  3. 5. 30+30+2+2+2+2
  4. 9. 11x2+5
Down
  1. 1. 100x2+30+30+12
  2. 3. 8+2+10-4
  3. 4. 30+30+30+3+3+3+1
  4. 6. 30-2-3-3
  5. 7. 10-5
  6. 8. 10+10