Per APA 4.31 to 4.38, write out numbers as words to express numbers up to nine (e.g., three, seven, eight), and use numerals to express numbers 10 or above (e.g., 11, 23, 256) .
Take the APA Style Diagnostic Quiz to test your knowledge.
Use words to express numbers when...
Seventeen computer programmers went out to dinner last night
The principal presented awards to three fourths of the student body.
Use numerals to express numbers in these situations...
She had been a nurse for 3 years.
[Exception: spell out the numeral for approximations of time: about four days ago]
Chapter 4 was considered required reading.
The student scored a perfect 7.
Each post was roughly 2.45 ft apart.
Teachers gave students ice cream if they scored in the top 5%.
You owe me $5.