Addendi mancanti fino a 20 · Set 18

20 problems
1
83 + 15 =
2
39 + 60 =
3
13 + 11 =
4
50 + 19 =
5
60 + 21 =
6
13 + 44 =
7
12 + 15 =
8
20 + 27 =
9
13 + 13 =
10
30 + 67 =
11
23 + 45 =
12
21 + 36 =
13
52 + 45 =
14
31 + 68 =
15
86 + 12 =
16
26 + 70 =
17
53 + 12 =
18
24 + 73 =
19
20 + 38 =
20
21 + 10 =
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