Welcome to a new grammar post, lovely readers. This topic came from one of you, thank you!
When do you write out numbers?
Some consistent rules include:
- Write out small, whole numbers that are less than 10: one, two, three, four, five, six, seven, eight, nine
- Write out centuries and decades: twenty-first century, the Seventies
- Write out a number if it starts a sentence: Six hundred men stormed the castle. (An exception is if the sentence starts with a year: 1965 was a great year.)
- Estimated and rounded numbers over a million are a mix:
2 million, 47 billion, 598 trillion (exact numbers are written out: 1,734,683,925; 1,985; 99,234, and so on)
- Similar to the above point, percentages, when a whole number, spell out; with decimal or fraction, use the number: thirty-seven percent (or 37 percent); 2.75%, 3 3/4%, ten percent (or 10 percent).
- When two numbers are next to each other, spell…