...blok 5 contractwerk.gif hoofdrekenen... oefening 1

16 + 47 =
52 - 18 =
140 + 71 =
11 + 901 =
72 - 43 =
49 + 58 =
150 - 69 =
66 + 99 =
650 - 230 =
60 + 95 =