French speaker here. (My native language is English but I learned French in France years ago, and can still speak it with near-native fluency). You're correct. French French (that is, French spoken in France, it's slightly confusing that the language's name and the country's adjective are the same) goes "cinquante, soixante, soixante-dix, quatre-vingts, quatre-vingt-dix, cent". In English, that would be "fifty, sixty, sixty-ten, fourscore, fourscore-ten, a hundred". But Swiss French goes "cinquante, soixante, septante, octante, nonante, cent", which would translate to English as "fifty, sixty, seventy, eighty, ninety, a hundred".