Two hundred-thousandths.
Twenty-five millionths.
First of all as a number/decimal it should be written as '0.021'. Note the prefix zero. In words ' Zero point zero two one'.
'Zero point zero five'.
To write 0.16 in decimal words, you would say "zero point one six." This represents the numerical value of 0.16 in words, with each digit being pronounced individually following the decimal point.
Five millionths.
Two hundred-thousandths.
Twenty-five millionths.
Three and sixty-three hundredths.
The number 10.20 is written in words as "ten point two zero".
Standard form:h+3 written in words: h added to three
Eighty and four hundred fifty-three thousandths.
Using the right words - leaves the reader in no doubt of what the writer is trying to say.
As written, the answer appears to be "with your mouth." If this is not a meaningful answer, ask the question again using words that convey your meaning.
The number 11.210 is written as "eleven and twenty-one hundredths".
Expressed in words, this is written twenty-three thousand four hundred and sixty-nine.
Escribí / he escrito todas las palabras en español / castellano.*In Spanish, words are not done, they are written.