FORMAT AND ARRANGEMENT

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6.21  NUMBERS

6.21.1 Single Digit

All single-digit numbers (1, 2, …, 9) should be written as words when used in a sentence.

incorrect

Creating a sustainable community/society is a highly complex process of evolution. The evolutional process involves mutual interaction of 3 systems; namely, 1) human and social system, 2) economic system, and 3) ecological system as shown in Figure 3.

correct

Creating a sustainable community/society is a highly complex process of evolution. The evolutional process involves mutual interaction of three systems; namely, 1) human and social system, 2) economic system, and 3) ecological system as shown in Figure 3.

However, single-digit numbers may be used when they are part of a word and immediately followed by a hyphen [ - ]:

A 7-point scale was used (with endpoints labeled “strongly agree” and “strongly disagree” in soliciting participant responses for each item.

6.21.2 Measurements

Use numbers with units of measurement (5 mg, 17 cm), time, dates, ages, scores, points on a scale, data in tables and figures … and include one space between the numeral and the unit.

avoid
 
USE
5mg   5 mg

6.21.3 Sentence Beginning

Never begin a sentence with a number in any case. Either 1) write the number as a word, or 2) restructure the sentence to enable use of the number.

incorrect

3 out of every 4 citizens responded that they were employing recycling measures at home on a daily basis.

Correct:  Option 1

Three out of every 4 citizens responded that they were employing recycling measures at home on a daily basis.

Correct:  Option 2

Out of every 4 citizens 3 responded that they were employing recycling measures at home on a daily basis.

6.21.4 Decimal Values

When using a decimal value of less than one (1), always precede the decimal point with a zero. If some of your data in tables has 2 digits to the right of the decimal point, then all numbers in the column should also have 2 digits to the right of the decimal point. Sometimes software functions cause an irregularity. Be consistent!

avoid
 
USE
.7
.13
  0.70
0.13

 

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