Fill in the Number Chart

Click on the missing numbers and choose the correct answer.
1
 
3
4
 
6
7
8
9
10
 
 
13
14
15
16
17
18
 
20
21
22
23
24
 
 
27
28
29
30
31
 
 
34
35
36
37
 
39
40
41
42
43
44
 
46
47
 
 
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
 
68
69
70
71
 
 
74
75
 
77
78
79
80
81
82
 
 
85
86
87
88
89
90
 
92
93
94
95
 
 
 
99
 
Well Done!
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