One of the most common grammatical mistakes people make in writing is using “less then” instead of “less than.” The correct form is “less than,” which is a phrase used to compare quantities or values.

“Less than” is used to indicate that one quantity is smaller or inferior to another. For example, “The temperature today is less than yesterday,” or “I have less money than my friend.” In both cases, “less than” is used to compare two quantities and indicate that one is smaller than the other.
An easy way to remember it: “than” is for comparisons, while “then” is about time or order, as in “first we ate, then we left.” If you are comparing two things, you want “than.” The only time “less then” appears correctly is when the two words belong to different parts of a sentence, as in “Spend less, then save the rest.”
On the other hand, “less then” is an incorrect spelling of the phrase, which can lead to confusion and misunderstanding. While it may seem like a minor difference, using “less then” instead of “less than” can make your writing appear unprofessional and unpolished.
It’s important to note that proper grammar and spelling can have a significant impact on the way your writing is perceived by others. Using correct grammar and spelling can make your writing more clear, professional, and easy to understand, while incorrect grammar and spelling can make your writing more difficult to read and understand.
To avoid confusion and ensure clarity in written and spoken language, it is important to use the correct phrase “less than” when making comparisons between quantities or values. Using the incorrect phrase “less then” can cause confusion and create a negative impression of the writer or speaker’s communication skills. It is therefore advisable to proofread and edit written language carefully, and to review spoken language for errors and inconsistencies before communicating important information.
In conclusion, the correct phrase is “less than,” and “less then” is an incorrect spelling of the phrase. While it may seem like a small mistake, using the correct form can make a significant difference in the way your writing is perceived by others. Therefore, it’s important to pay attention to proper grammar and spelling when writing, in order to ensure that your message is clear and well-received.