Numbers 70–99: French counts in twenties
The logic
French (from France) has no single word for 70, 80 or 90. It builds them by calculation, a leftover of an old counting system in twenties (English still has a trace of it: four score and seven).
- 70 = 60 + 10 → soixante-dix /swa.sɑ̃t.dis/
- 80 = 4 × 20 → quatre-vingts /ka.tʁə.vɛ̃/
- 90 = 4 × 20 + 10 → quatre-vingt-dix /ka.tʁə.vɛ̃.dis/
If German einundzwanzig (one-and-twenty) taught you to calculate while listening, you are already trained for this.
The full pattern
| Number | French | Built as |
|---|---|---|
| 70 | soixante-dix | 60 + 10 |
| 71 | soixante et onze | 60 + 11 (with et!) |
| 72 | soixante-douze | 60 + 12 |
| 75 | soixante-quinze | 60 + 15 |
| 77 | soixante-dix-sept | 60 + 10 + 7 |
| 79 | soixante-dix-neuf | 60 + 10 + 9 |
| 80 | quatre-vingts | 4 × 20 (with -s) |
| 81 | quatre-vingt-un | 4 × 20 + 1 (no et, no -s) |
| 85 | quatre-vingt-cinq | 4 × 20 + 5 |
| 90 | quatre-vingt-dix | 4 × 20 + 10 |
| 91 | quatre-vingt-onze | 4 × 20 + 11 |
| 96 | quatre-vingt-seize | 4 × 20 + 16 |
| 99 | quatre-vingt-dix-neuf | 4 × 20 + 10 + 9 |
Sound details
- The x in soixante sounds like /s/: /swa.sɑ̃t/, never /ks/.
- dix alone is /dis/, but in dix-sept /di.sɛt/, dix-huit /di.zɥit/ and dix-neuf /diz.nœf/ it changes. So soixante-dix-neuf is /swa.sɑ̃t.diz.nœf/.
- In quatre-vingt-un, quatre-vingt-huit, quatre-vingt-onze the t of vingt stays silent: /ka.tʁə.vɛ̃.œ̃/, /ka.tʁə.vɛ̃.ɥit/, /ka.tʁə.vɛ̃.ɔ̃z/. Compare vingt et un /vɛ̃.te.œ̃/, where it is pronounced.
- The -s of quatre-vingts is only written; you hear it only as a liaison: quatre-vingts ans /ka.tʁə.vɛ̃.zɑ̃/.
Belgium and Switzerland: the easy way
In Belgium and French-speaking Switzerland people say septante (70), nonante (90), and in parts of Switzerland huitante (80). So septante-deux = 72, nonante-neuf = 99. Understand them, but in France use the standard forms.
Tip: French phone numbers are read in pairs: 06 78 92 85 71 = zéro six, soixante-dix-huit, quatre-vingt-douze, quatre-vingt-cinq, soixante et onze. Practise by reading prices and phone numbers aloud.