Fun with numbers

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1234567891011
Across
  1. 4. Ten lakh in international system is
  2. 5. In Roman Numerals,I am written as XLIX
  3. 6. Rounding off 8 and 16 to the nearest tens and find product you will get me
  4. 8. Readme:2,00,00,008
  5. 9. The digit 9 occurs ____ times between 1 and 100
  6. 10. 1209574 is ____ than 1109754
  7. 11. I am the smallest counting number
Down
  1. 1. I come before the smallest three digit number
  2. 2. Read me:6,000,002
  3. 3. 1 billion in Indian system is
  4. 6. Solve me:23+9×(6-3)-20
  5. 7. Solve me by rounding off to nearest hundreds:875-384