The modern style for numbers

Instructions: Consider how you would write the number below. Then, flip the card to see how the Supreme Court justices do it.

Flip Cards – Numbers

One witness testified that, 8 / eight days before the murder, he had seen Andrew in a rural area commonly used for target practice.

Answer: eight Generally, spell out numbers zero to nine.

When they ran out of money 3 / three months later, they returned to the United States and were immediately arrested.

Answer: three Generally, spell out numbers zero to nine.

The witness also said that later he found 16-gauge / sixteen-gauge shotgun shells at the site.

Answer: 16-gauge Generally, use numerals for numbers 10 and above.

Flip Cards – Numbers

With minor amendments not relevant here, that definition endured for about thirty / 30 years.

Answer: 30 Generally, use numerals for numbers 10 and above.

Twenty-four hours / 24 hours later, those photos disappear.

Answer: Twenty-four hours Spell out higher numbers when they start the sentence.

In a pending suit against San Francisco regarding the Bayside facility, the penalties sought are $10 billion (ten-billion dollars) / $10 billion.

Answer: $10 billion No repetitive parenthetical is needed.