Math

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Across
  1. 4. +
  2. 6. x
  3. 7. 12:15
  4. 10. starts at 0 ends at ∞
  5. 11. ➗
  6. 13. -
Down
  1. 1. horse shoe method
  2. 2. starts at to ends at ∞
  3. 3. starts at 1 ends at ∞
  4. 5. 0,9
  5. 8. M?={...}
  6. 9. we have it on Friday
  7. 12. starts at 1 ends at ∞