Writing out numbers in French

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Writing out numbers

Compound numbers under 100 (from dix-sept 17 to quatre-vingt-dix-neuf 99) are linked with a hyphen (-).
quarante-trois (43)
soixante-douze (72)
vingt-huit (28)
For 21, 31, 41, 51, 61 and 71 we add et and no hyphen. This rule doesn’t apply for the numbers 81 and 91.
vingt et un (21)
trente et un (31)
quarante et un (41)
cinquante et un (51)
soixante et un (61)
soixante et onze (71)

but: quatre-vingt-un (81), quatre-vingt-onze (91)
We don’t add a hyphen or et around larger numbers like cent (100), mille (1000) and un million (1,000,000).
cent trois (103)
deux cent un (201)
mille cinq cent douze (1512)
trois cent quatre-vingt-douze (392)

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