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. If it does not contain a fractional part then the decimal representation does not require a decimal point. So the decimal for 21 is 21 – as in the question.
21 in decimal form can be 21.0 or 21.00 or 21.000, or however many zeros you'd like to write after the decimal point.
To write 21 thousandths in decimal form, you would place the decimal point three places to the left of the digit 2, as each place value represents a power of 10. Therefore, 21 thousandths in decimal form is 0.021.
21.012
21over 150 written as a decimal = 0.14
It is 8.021
21/8 = 2 and 5/8 or 2.625.
.21
21% written as a decimal is 0.21
It is: 21/50 = 0.42 as a decimal
If you mean 21/1000 then it is 0.021 as a decimal
Decimal 21.0=21 percent 2100
21% in a decimal form is 0.21