CDE Style Manual - Publications (CA Dept of Education)

In general, if an abbreviation can be misunderstood, do not abbreviate. Always use standard abbreviations. Write out the term in full the first time and include the abbreviation or acronym in parentheses. ... ($7.55 million, not $7.554 million). Decimals are preferred to fractions ($1.5 million, not $1½ million). ... Correct alternatives ... ................
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