...blok 1 contractwerk.gif hoofdrekenen... oefening 4

48 + 3 =
83 - 4 =
54 - 6 =
36 + 7 =
43 - 5 =
83 + 9 =
55 + 6 =
31 - 2 =
24 - 8 =
79 + 4 =