Vitalina is right, also as a little addition: normally they write
"Eén" = 1 or "één", normally they never put an accent sign on a capital character, so "É" is wrong, it should be written: "Eén"
@Vitalina: it is: "Ik neem één appel en twee peren." Since you take only 1 apple it is only 1 "appel", saying "appels" written with an "s" is plural, which means you would have more than 1 apple. So : one apple = "één appel" or two apples = "twee appels" . Best regards.