In certain content types (marketing materials, blogs, press releases), spell out fractions whose denominator is 10 or lower: three-fourths instead of 0.75.
✓ Nearly three-fourths of companies report they currently take months to incorporate market changes.
However, if it's too difficult to write the number as a fraction, use decimal points (1.375 or 47.25).
Never use numerals separated by a slash (1/2, 1/3) to express fractions.
In all UI content and technical documentation, use decimals instead of fractions.
Always carry decimals to at least the hundredth place (33.76).
In tables, align decimals on the decimal point.
Add a zero before the decimal point for decimal fractions less than one (0.5 cm).