Complete the following statements with suitable words or figures.
99,999=99,999+...........
If a is a whole number, then a+0=0+a=a (additive identity )
Therefore, 99,999=99,999+0
Hence, the result is 0.
72+597+28+403=,,,,,,,,,,,,
800+(,,,,,,,+391)=(........+648)+391
18+6+18+7=18×(6+......)
4763-...........=4763
(5-4)-1 ≠ 5-(4-1)
So, ………..property does not hold true for subtraction.