You can write 90 in short word form as ninety.
ninety
Ninety.
Ninety
90 + 2
write each number in expanded form
The number 90 is written out in words as such: ninety. You should spell out a number rather than write it in number form in particular scenarios, such as if you are beginning a sentence with a number.
XC = 90
90+ whatever number is in form of sin.
The number that comes immediately after 90 is 91.
90/20=9/2. If you want to write it as a mixed number, you would have 4 1/2.
90 is an integer, not a fraction.