maths, fractions. integers & angles

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Across
  1. 3. integers on the left of 0
  2. 6. the fraction from 3 to 6 on a clock
  3. 7. the smallest common multiple of 2 no.s
  4. 8. fraction with greater numerator
  5. 10. 180' angle
  6. 12. 0 is a _____ number
Down
  1. 1. angle that is more than 180'
  2. 2. the angular measure of 1 division in clock
  3. 4. fractions with same value
  4. 5. whole numbers and negative numbers
  5. 9. fractions with a whole
  6. 11. a 180 angle is ____ a revolution