Math crossword

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Across
  1. 3. 3x10-5+6
  2. 4. a school subject
  3. 5. 4x5
  4. 6. a way to divide
  5. 9. 1/3x3
  6. 10. 2x30
  7. 11. 9x5
Down
  1. 1. a way to measure
  2. 2. 0x0
  3. 7. another way to measure
  4. 8. 7x9