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Numbers

502.1 Numbers Under 10

Numbers from one to nine are usually written as words; all numbers 10 and over are usually written as numerals.

two  seven  nine

10  25  106

502.2 Very Large Numbers

You may use a combination of numerals and words for very large numbers.

1.3 million  17 billion

You may spell out large numbers that can be written as two words.

two thousand; but 2,001

502.3 Sentence Beginnings

Use words, not numerals, to begin a sentence.