Abbreviations a.m., p.m., No., and $

Use the following abbreviations only with specific times, numbers, and monetary amounts.

Avoid using these abbreviations when they are not accompanied by a specific figure.

When not using a.m. or p.m., write out the time in words (four o’clock in the afternoon, twelve noon, seven in the morning).

Exercises:

Abbreviations 1

Abbreviations 2

Related topic:

Capitalizing abbreviations