You can write 90 in short word form as ninety.
You can write 5.24 in word form as five and twenty-four hundredths
3.21 is a fraction. It is a fraction in decimal form rather than in the form of a ratio. However, that does not stop it being a fraction. Its equivalent, in rational form, is 321/100 which cannot be simplified.
You can write 14.12 in word form as fourteen and twelve hundredths
91 in word form is ninety-one.
321/100
300+20+1
321 in expanded form = (3 x 100) + (2 x 10) + (1 x 1)
To convert 3.21 to a fraction, we can write it as 3 + 0.21. Since 0.21 can be written as 21/100, the fraction form of 3.21 in simplest form is 321/100.
3.21 = 321/100. That is the number in the form of the simplest fraction though I would not say that is a simpler form than 3.21!
3.21 is, itself, a fraction. It is a fraction in decimal form rather than in the form of a ratio. However, that does not stop it being a fraction. Its equivalent, in rational form, is 321/100. It is in its simplest form.
321 tenths (321/10) as a decimal = 32.1
0.321 is 321 thousandths or 321/1000
321/1000 is the simplest form.
Write 0.34 in word form
CCCXXI
The number 321 in Roman numerals would be CCCXXI