Puuttuvat yhteenlaskettavat alle 20 · Sarja 67

20 problems
1
51 + 46 =
2
46 + 52 =
3
23 + 15 =
4
17 + 52 =
5
14 + 25 =
6
72 + 22 =
7
25 + 10 =
8
11 + 44 =
9
70 + 11 =
10
54 + 30 =
11
74 + 24 =
12
13 + 36 =
13
33 + 45 =
14
61 + 13 =
15
10 + 84 =
16
57 + 22 =
17
50 + 44 =
18
21 + 75 =
19
10 + 62 =
20
42 + 50 =
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