In general, use numerals to express number 10 and above, and letter to express numbers below 10. However, consider some exceptions.
Uses numerals to express
-
- Numbers 10 and above including the abstracts
- Number that priced a unit of measurement
- 5 cm between…
- Numbers that represent statistical or mathematical fractions, decimal quantities, percentages, and rations
- Multiplied by 3
- More than 6%
- The 7th percentile
- A ratio of 14:1
- Numbers that represent time, dates, ages, scores and points on scales, exact sums of money and numerals as numerals
- The numeral 8 on the keyboard
- 1 hr 45 min.
- 4:30 pm.
- 6-year-old
- $8 extra dollars
- Numbers that show a specific place on books and series, but when the number precedes the noun, the usual guidelines for number use apply
| Number after a noun | Number before a noun |
| Year 3 | The 1rd year |
| Grade 5, Grade 11 | The fifth grad, the 11th grade |
| Items 2 and 6 | The second and sixth items |
| Question 3 | The third question |
| Table 3, Figure 6 | The third table, the fifth figure |
| Column 9, Row 8 | The ninth column, the eighth row |
| Chapter 2, Chapter 13 | The first chapter, the 13th chapter |
(Adapted from APA, 2020, pp.178-179)
The American Psychological Association. (2020). Publication Manual of the American Psychological Association 7th edition
