When writing a paper, when do spell out numbers?

Question

Do I type 2 or type two, or do I type twenty or 20

Answer 1

Numbers 1 - 9 are spelled out, once you get to10 and above, you can just use the numerals. Here's a web site to prove my point...

http://www.grammarbook.com/numbers/numbers.asp

Answer 2

Numbers 1-9 you spell out. Numbers above that write numerically. And yes, four percent, not 4%.

Answer 3

Type two. You want to always use letters when describing the amount of something, your age, and the amount of money. Review a newspaper or even a book and you'll see it for yourself. I hope this answers your question.

Answer 4

In shorthand/notes, 2 is better.
In actual essays, always use the word "two" unless it's a date (such as 1990 or June 6th).

Answer 5

if you are writing an academic paper, it looks more professional, and teachers prefer to have numbers spelled out.

Answer 6

I was always told to write the whole word out, except for dates of years, because that would look silly.

Answer 7

i believe it is any number under 10, you spell out, anything above you can simply put the number

Answer 8

all in digits like 1, 1.2 and so on. You need to add the units as well, and it makes sense to write anything in digits.