67 Maths Puzzle 67

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Across
  1. 3. It has 10 years
  2. 5. It has 60 seconds
  3. 6. It has 1,000 milliseconds
  4. 7. It has 60 minutes
Down
  1. 1. It has 365 days
  2. 2. It has 10 decades
  3. 3. It has 24 hours
  4. 4. It has 7 days
  5. 5. It has 28/29/30/31 days