Mastering Dutch numbers — a surprisingly tricky area for English and French speakers. Dutch numbers follow German-style order: in two-digit numbers from 21 upward, the units come before the tens, connected by -en-: 21 = eenentwintig (one-and-twenty), 45 = vijfenveertig (five-and-forty), 99 = negenennegentig (nine-and-ninety). This is the opposite of French and different from English. The order trips up speakers during phone numbers, prices, and addresses.
Practice numbers in context: prices in Dutch shops, Dutch addresses, phone numbers, and the Dutch postal code system (4 digits + 2 letters: 1017 CK). Dutch time: half drie means 2:30 (half before three), kwart voor vier = 3:45 (quarter before four), kwart over vijf = 5:15 (quarter past five). The half convention is a major false friend — English “half three” means 3:30 in British English, but Dutch half drie means 2:30. This causes genuine confusion in scheduling.
Years in Dutch: like German, years are typically read as two pairs (negentienhonderd negenennegentig = 1999; tweeduizend zes = 2006). Large numbers use the period as thousands separator and comma as decimal separator (opposite of English): 1.000.000 = one million, 3,14 = 3.14 (pi). Mastering numbers pays practical dividends immediately — you use them in every transaction, every address, every appointment.