Knowing how to present numbers in your writing is not a simple matter. There are many rules to follow when writing numbers.

Here are 10 rules to follow.

**Spell out single-digit numbers.**
Did you hear that Tom had *four* hits in yesterday's game?

**Use numerals for numbers great than nine.**
We had *18* students show up for the discussion group.

**Spell out numbers that begin a sentence.**
*Seventy* students will be graduating tomorrow.

**Spell out and hyphenate simple fractions.**
More than *two-thirds* of the students are going on the field trip.

**Use numerals for mixed fractions.**
The cake recipe requires 3 ¼ cups of flour.

**Use numerals for dates.**
The semester ends *June 10* this year.

The semester ends on the *30th of June* this year.

**Use numerals for decimals. Put a zero in front of the decimal if there is no value in front of the decimal point unless the decimal begins with a 0.**
Don't add more than *1.6* pints of water to the mixture.

We had *0.23* inches of rain last month.

We had *.06* inches of rain yesterday.

**Use numerals for the time of day when using a.m. or p.m.**
My school day begins at *7 a.m.*

**Spell out the time of day when using "o'clock."**
Don't forget to come to the *three o'clock* meeting on Friday.

**Be consistent. Don't mix spelling out numbers and using numerals in the same sentence, even though it seems that you are violating either rule 1 or 2.**
There are *8* boys and *14* girls in my class.

or

There are *eight* boys and *fourteen* girls in my class.