Addendi mancanti fino a 20 · Set 82

20 problems
1
31 + 51 =
2
31 + 64 =
3
16 + 31 =
4
10 + 87 =
5
16 + 32 =
6
25 + 63 =
7
11 + 37 =
8
50 + 48 =
9
62 + 10 =
10
20 + 69 =
11
22 + 75 =
12
47 + 10 =
13
51 + 30 =
14
43 + 43 =
15
60 + 15 =
16
32 + 32 =
17
41 + 16 =
18
74 + 21 =
19
12 + 65 =
20
40 + 59 =
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