Addition & Subtraction

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Across
  1. 4. Difference is the answer for which operation?
  2. 7. The ______ numeral for L-XLI = IX
  3. 8. When _______ is subtracted from a number, the difference is the number itself.
  4. 9. What should be added to 6,45,780 to make it 7,45,780?
Down
  1. 1. The sum of 3450 and 1550 is ___________.
  2. 2. 7 hundred - 65tens = ________
  3. 3. Change in the order does not change the ______.
  4. 5. 345 rounded to nearest 100 will be _________
  5. 6. What should be subtracted from 565 to get 495?
  6. 9. Which is the smallest number that changes an odd number to an even number on addition or subtraction?