Jump to exercise:
Fill the missing number
1, 2, 3, 4, 5, , 7, , 9
1, 2, 3, 4, 5, 6, , 8,
1, 2, , , 5, 6, 7, 8, 9
1, 2, , 4, 5, 6, 7, 8, 9
1, 2, , 4, 5, 6, , 8, 9
, 2, 3, 4, 5, , 7, 8, 9
1, , 3, 4, 5, 6, 7, 8,
, , 3, 4, 5, 6, 7, 8, 9
1, 2, 3, , , 6, 7, 8, 9
1, 2, 3, 4, 5, 6, 7, ,
Your score is:
Excellent
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