Anyway, add the Vigesimal system for numbers above 49 and you're really off to the races https://www.kbh-sprogcenter.dk/en/blog/learn-danish-numbers/
For the sake of hilarity, let's add that Icelandic people are forced to study Danish in school Because Reasons. Icelandic is not mutually intelligible with the major Scandinavian languages, even in written form. The argument for studying Danish is of course that everyone benefits from Nordic countries sticking together.
But Danish is the most cumbersome way to get some of that benefit of a common language.
Some Icelandic professor character actually recently dropped a hot take, suggesting that Icelandic schools could switch to teach some form of Finland Swedish, because it'd be remarkably easy for Icelandic speakers to pronounce and probably the easiest option for most people in the Nordics to grasp relative to effort. https://translate.google.com/translate?hl=en&sl=auto&tl=en&u...
Being a Swedish speaker from Helsinki, Finland, I kind of don't like the nasality of my own dialect. I'd prefer to listen to dialects from the Swedish west coast around Gothernburg all day, because those are very soft sounding. But the suggestion likely makes some sense. Formal/common institutional spoken Finland Swedish is indeed overly articulated and devoid of slang.
Informal Finland Swedish tends to be hyperlocal and may carry loan words from Finnish, which is a non-starter in the other Nordic countries, and very much frowned upon by Swedish schools in Finland.