Counting from 1 to 20 fill in the missing numbers

Counting from 1 to 20
Name : .................................................................................. Class : ..............................
1 2 3 4 5
6 7 8 9 10
............. 20
Fill in the missing numbers below in ascending order starting from 1, 2.........20
Example
1
2
3
5
7
9
11
12
13
15
16
17
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4
20
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