tion words Ruby

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Across
  1. 2. of gas that is mad for the air
  2. 5. sum you have to increase your number
  3. 8. real
Down
  1. 1. building site or building
  2. 3. take away maths sum
  3. 4. mind set
  4. 6. want to do something
  5. 7. type of maths which you have to add