School homework

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Across
  1. 2. - opposite of multiplication
  2. 7. - based on the number 10,10th parts and powers of 10
  3. 8. - an amount in each hundred
  4. 9. - to do with the environment
Down
  1. 1. - a tiny amount of 1 whole, or an amount bigger than a whole with different parts.
  2. 3. - examining areas to establish the truth
  3. 4. - a scientific guess
  4. 5. - dealing or controlling people
  5. 6. - a long established tradition