Numbers in Writing Rules
1) Spell out numbers one through one hundred.
Example: I ate three apples today. My dog is seven years old. We have sixty-seven rabbits.
2) Use numbers for numbers above one hundred, unless writing the number would be two words or less.
Example: I have twenty-four students in my class. My sister has 367 stamps in her collection.
3) Always spell out numbers that begin sentences.
Example: Four hundred and fifty- three people attended the party.
However, it is better to switch your sentence around to avoid putting a multi-worded number at the beginning of the sentence.
Example: There were 453 people at the party.
4) Always use numbers for dates.
Example: My birthday is April 14. He was born in March, 1934.
5) Always use numbers for phone numbers.
Example: The school’s phone number is 905-877-4221.
6) Use numbers for time if using a.m. or p.m.
Example: My alarm is set for 7a.m.
However, spell out the number if using o’clock or if a.m. or p.m. are omitted.
Example: I will make my bed at seven o’clock each morning.
Sarah said she would meet us at four.
