Rule: The following examples apply when using dates:
The meeting is scheduled for June 30.
The meeting is scheduled for the 30th of June.
We have had tricks played on us on April 1.
The 1st of April puts some people on edge.
Rule: When expressing decades, you may spell them out and lowercase them.
Example: During the eighties and nineties, [...]

Rule: Always spell out simple fractions and use hyphens with them.
Example: One-half of the pies have been eaten.
Rule: A mixed fraction can be expressed in figures unless it is the first word of a sentence.
Example: We expect a 5 1/2 percent wage increase.
Example: Five and one-half percent was the maximum allowable interest.
Rule: Hyphenate all compound [...]

If you question the necessity of punctuation, here is a story that should illustrate its power.
A professor wrote on the chalkboard: A woman without her man is nothing.
He asked students to correct any punctuation errors. While most of the male students saw nothing wrong with the sentence, most of the females rewrote the sentence as [...]

Regardless vs. Irregardless
Some words in the English language are so overused that we don’t notice that they are incorrect or don’t even exist. A perfect example is irregardless. There is no such word as irregardless because regardless already means without regard. The –ir prefix is redundant.
Sneaked vs. Snuck
Sometimes, two forms of a word may be [...]

Can you guess which word I see misspelled most often? Did you guess misspelled? You’re getting warm. Actually, it’s grammar. From my experience, I think it’s safe to estimate that 20 percent of the English-speaking world spells it with an –er ending.
Before anyone points an accusing finger at anyone else, we might want to explore [...]