AB: Addition zweistelliger Zahlen
Berechne die Additionen im Kopf:
7 + 21 = 28
8 + 42 = 50
9 + 53 = 62
15 + 20 = 35
17 + 43 = 60
19 + 52 = 71
23 + 27 = 50
35 + 11 = 46
40 + 13 = 53
44 + 21 = 65
46 + 47 = 93
52 + 50 = 102
Berechne die Additionen im Kopf:
11 + 31 = 42
33 + 44 = 77
16 + 38 = 54
15 + 27 = 42
22 + 33 = 55
31 + 34 = 65
47 + 41 = 88
47 + 47 = 94
42 + 25 = 67
75 + 64 = 139
29 + 71 = 100
72 + 50 = 122