You'll notice that things get a little tricky after 69, so here's how you can remember numbers 70 to 90. 70 = 60 + 10 (soixante dix) 80 = 4 times 20 (quatre vingt) 90 = 4 times 20 + 10 (quarte vingt dix) 70 and 90 follow onze, douze... while 80 follows un, deux... So remember it as onze-un-onze (70-80-90). We hope you'll find this helpful. Cheers🎉