You would write it as 9000 - nothing more, nor less.
A decimal number is simply a way of representing a number in such a way that the place value of each digit is ten times that of the digit to its right. A decimal representation does not require a decimal point. Adding zeros after the decimal point is wrong because they imply a degree of accuracy (significant figures) for which there is no justification.
It is 7.009
53/100 as a decimal is 0.53
129,000
Nine hundred and seventy nine thousands.
Nine thousands in decimal
It is 7.009
0.1200
53/100 as a decimal is 0.53
915,000
9.021
It is 7.009
129,000
Nine hundred and seventy nine thousands.
Nine ten-thousands in decimal form is 90,000Nine ten-thousandths in decimal form is 0.0009
It is: 9,700,000
?
Nine thousands in decimal