Being English I write it as:
one hundred and twenty, and nine hundredths; or
one hundred and twenty point zero nine.
Americans are likely to write it:
one hundred twenty and nine hundredths
8.4
Point two two five seven is in words. It is written because after decimal we write each number as single number.
Twelve and twenty five hundredths.
To write 2.061 in decimal words, you would say "two and sixty-one thousandths." This breaks down the number into its whole number part (2), the decimal point, and the fractional part expressed in words (061 as sixty-one thousandths). This helps to clearly communicate the value of the number in words.
Four hundred ninety five thousandths.
There are no decimal words! The number is eight hundredths.
8.4
Point two two five seven is in words. It is written because after decimal we write each number as single number.
8.05 = eight and five hundredths.
Twelve and twenty five hundredths.
12.9 IS a decimal number. It is twelve and nine tenths.
As given in the question '0.3' is the decimal. However, in words it is 'zero point three'.
To write 2.061 in decimal words, you would say "two and sixty-one thousandths." This breaks down the number into its whole number part (2), the decimal point, and the fractional part expressed in words (061 as sixty-one thousandths). This helps to clearly communicate the value of the number in words.
To write 7.5 in words, you would write "seven point five." This represents the whole number 7 followed by a decimal point and the fractional part 5 tenths. In this case, the decimal point separates the whole number from the fractional part, and the word "point" is used to indicate the decimal point.
Three hundred forty-six thousandths
sixty-seven point twenty-one
Six hundred thirty-five.