Why you can annex zeros to the beginning and end of the decimal?

You can annex zeros to the beginning of a decimal because leading zeros do not affect its value; for example, 0.05 is the same as 0.005. Similarly, adding zeros to the end of a decimal does not change its value in decimal notation, as they indicate precision rather than quantity; for instance, 1.50 is equivalent to 1.5. This property allows for flexibility in representing numbers without altering their actual value.