Good and Bad Writing -- Exercises in Evaluating Writing Samples
Mechanics -- Fractions
For the most part the same rules apply to fractions as they do to all numbers. When standing alone, a fraction should be spelled out.
The army lost three-quarters of its men.
When the fraction is used in a series of numbers, the writer should use numerals.
The recipe called for 3/4 cup of sugar, 1 cup of flour, and 1/2 teaspoon of salt.
When writing a mixed number, the writer should use numerals.
The room measured 5½ feet by 3¾ feet.