Blog Grammar Rules Can You Start a Sentence With a Number?

Can You Start a Sentence With a Number?

Ashleigh Ferguson

Ashleigh Ferguson

Copywriter

Published Oct 12, 2022

can you start a sentence with a number

The English language has many rules regarding how to start a sentence. For example, is it grammatically correct to start a sentence with a number?

In informal contexts, there’s nothing wrong with starting a sentence with a number. However, if you’re writing in a more formal context, such as academia or business, there are some guidelines you should follow.

In this article, we’ll explain when and how you can start a sentence with a number, and show you a few examples.

Contents:
  1. Rules for Starting a Sentence With a Number
  2. Can You Start a Sentence With a Year?
  3. Examples of Starting a Sentence With a Number
  4. Should You Start a Sentence With a Number?

Rules for Starting a Sentence With a Number

When writing a number in the middle of a sentence, it’s generally agreed that numerals should be used from 10 upwards. But what about beginning a sentence with a number?

The rules vary according to the style guide you’re referencing.

According to the Modern Language Association (MLA), you should never begin a sentence with a numeral. Instead, you should try to reword the sentence. If you can’t reword the sentence, spell out the number. For example:

  • Seventy-six percent of the class barely passed the final, 18% flunked miserably, and 6% burst into tears.

Most of the main English language style guides (i.e. The Chicago Manual of Style, The Associated Press Stylebook, the Publication Manual of the American Psychological Association) agree that you should spell out numbers at the beginning of a sentence, rather than using a numeral.

  • Incorrect: 8 books were returned to the library.

  • Correct: Eight books were returned to the library.

how to start sentences with numbers

A few style guides do have a more lenient approach, which we’ll discuss later on.

Do You Spell Out Numbers at the Beginning of a Sentence?

The consensus across style guides is that you should spell out numbers at the beginning of a sentence.

You should also avoid starting a sentence with a large number. Large numbers are extremely wordy to spell out and they can make your writing clunky.

To ensure clear communication, reword the sentence or add an introductory word or phrase before the number.

  • Incorrect: Three hundred and forty-eight** party-goers were in attendance.

  • Correct: The party had 348 attendees.

There are different rules around starting a sentence with a complex number, such as a number with a decimal point. In these instances, you shouldn’t spell out the numeral.

To ensure your writing has a flowing and readable structure, rewrite the sentence or add an introductory phrase before the number with the decimal place.

  • Incorrect: 44.47% of the students failed the exam.

  • Incorrect: Forty-four point forty-seven percent of the students failed the exam.

  • Correct: In total, 44.47% of the students failed the exam.

ProWritingAid's Readability Report

ProWritingAid’s Readability Report can flag instances where writing out numerals would make your writing clunky and difficult to follow.

AP Style Starting a Sentence With a Number

Using numbers with the AP style guide

According to the Associated Press (AP) Stylebook, you should spell out numbers at the start of a sentence. For example:

  • Forty years was a long time to wait.
  • Fifteen to 20 cars were involved in the accident.

However, there are some exceptions to this rule. The AP Stylebook says it’s acceptable to use numerals when starting a sentence with a year, or a combination of letters and numbers.

Starting a sentence with a year

  • 1994 was a very harsh year for the crops.

Starting a sentence with a combination of letters and numbers

  • 3D printing has become very popular over the past decade.

Can You Start a Sentence With a Year?

If the AP Stylebook is your go-to guide, it’s acceptable to start a sentence with a year. The guidelines state that you can use numerals, rather than spelling it out.

  • 1974 would go down as the year she finally began to live a little.

Other official style guides like the MLA Handbook say to avoid it. Instead, you can reword the sentence by adding an introductory phrase to the start.

Here is an example of an alternative to the sentence above:

  • She would recall 1974 as the year when she finally began to live a little.

avoid starting sentences with numbers

Examples of Starting a Sentence With a Number

Here are a few sentences that start with a number.

  • Thirty students registered for Mr. Harley’s class.
  • Forty million people viewed the live broadcast.
  • Thirty of the wells in the eastern quadrant required workovers.
  • Five writers entered the competition with hopes of winning the grand prize.
  • Twenty-five cars lined up side by side.

Should You Start a Sentence With a Number?

If you’re writing an academic essay or writing for a company, it’s important to follow your school or business’s preferred style.

As a general rule, it’s grammatically acceptable to start sentences with a number as long as it’s spelled out. But remember these writing tips:

  • Avoid opening a sentence with large numbers or complex numbers with decimal places
  • Always consult your style guide, especially in formal writing
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Ashleigh Ferguson is a Copywriter on the ProWritingAid Team. With an affinity for learning new things, you can always count on her to know some random fact. She’s a self-proclaimed ‘Fix-it Felix’ and a newly minted ‘candle lady’.

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