Aftrekken tot 1000 (H - T = HT) oefening 2
Vul in!
400 - 80 =
500 - 70 =
300 - 60 =
400 - 70 =
500 - 90 =
200 - 50 =
400 - 60 =
300 - 90 =
200 - 70 =
500 - 40 =
Controleer
OK