Addendi mancanti fino a 20 · Set 90

20 problems
1
12 + 11 =
2
44 + 22 =
3
27 + 30 =
4
15 + 41 =
5
25 + 34 =
6
62 + 37 =
7
47 + 12 =
8
14 + 10 =
9
43 + 11 =
10
30 + 26 =
11
27 + 30 =
12
48 + 20 =
13
34 + 10 =
14
25 + 34 =
15
21 + 63 =
16
15 + 50 =
17
20 + 52 =
18
60 + 15 =
19
48 + 51 =
20
33 + 41 =
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