Welcome to Grammar Day at Seriously Write. Do you ever wonder
whether you should use a numeral or spell out the number? Today,
we’re going to look at rules and examples that will hopefully
alleviate some confusion. Rule 1: In books, spell out whole
numbers one through one hundred, as well as round numbers.
Examples: I would like three copies. I would like one hundred
copies. I would like 101 copies. In articles, spell out whole
numbers below 10; use numbers for 10 and above. Examples: There
are nine people on the team. There will be 12 people on the
team. Rule 2: Be consistent within a category. Examples: Out of
10 apples, I found 2 rotten ones. Out of ten apples, I found two
rotten ones. Rule 3: If you have numbers in different
categories, use numerals for one category and spell out the
other. Examples: It takes 7 peaches to make one pie and 12
apples to make two pies. I purchased 15 tickets for my seven
employees. I have 10 toes but only two feet. Rule 4: Spell out
simple fractions and use hyphens with them