Notice that from number twenty and up the Danes say the numbes the other way around than in English. For example 21 becomes: en-og-tyve ([lit: one-and-twenty]). Have a close look at the numbers below.

		21	enogtyve	twentyone	num
		22	toogtyve	twentytwo	num
		23	treogtyve	twentythree	num
		24	fireogtyve	twentyfour	num
		25	femogtyve	twentyfive	num
		26	seksogtyve	twentysix	num
		27	syvogtyve	twentyseven	num
		28	otteogtyve	twentyeight	num
		29	niogtyve	twentynine	num
		30	tredive	thirty	num

Counting further up you just continue the pattern above: Start with the ones (1-9) and then the tens (see below)!
(except 10 obviously. See numbers 10 to 20)

		10	ti	ten	num
		20	tyve	twenty	num
		30	tredive	thirty	num
		40	fyrre	fourty	num
		50	halvtreds	fifty	num
		60	treds	sixty	num
		70	halvfjerds	seventy	num
		80	firs	eigthy	num
		90	halvfems	ninety	num
		100	hundrede	one hundred	num