Optellen tot 100 zonder brug (TE + T=TE) oefening 1

26 + 20 = 53 + 30 =
37 + 40 = 41 + 10 =
55 + 20 = 46 + 50 =
39 + 30 = 27 + 50 =
33 + 60 = 58 + 30 =