Except also Swedish (literally) and German (basically) use 9 * 10 for 90. One might also write the French as 4 * 20 + 17 (which does make a ton of sense; they just got lazy with 17-19).
Except also Swedish (literally) and German (basically) use 9 * 10 for 90. One might also write the French as 4 * 20 + 17 (which does make a ton of sense; they just got lazy with 17-19).