Complete the following statements with suitable words or figures.
4763-...........=4763
If we take away 0 from any number, the difference is always the same number.
⇒a-0=a
Hence zero is required solution
99,999=99,999+...........
800+(,,,,,,,+391)=(........+648)+391
72+597+28+403=,,,,,,,,,,,,
18+6+18+7=18×(6+......)
(5-4)-1 ≠ 5-(4-1)
So, ………..property does not hold true for subtraction.