Preschool Worksheets Images - Free Download on Freepik - Free Printable

Let me work through this problem step by step.

Looking at the grid, I can see it's organized in columns with numbers that need to be filled in. Let me identify the pattern:

Column 1: 1, 3, _, 5, _, 7, _, 9, 10
- This appears to be counting by 2s (odd numbers), but then ends with 10
- Missing numbers: between 3 and 5 should be... wait, let me reconsider
- Actually looking more carefully: 1, 3, [blank], 5, [blank], 7, [blank], 9, 10
- The pattern seems to be odd numbers: 1, 3, 5, 7, 9
- But there are blanks between them, and it ends with 10
- Let me count the positions: there are 9 rows total
- Row 1: 1
- Row 2: 3
- Row 3: blank
- Row 4: 5
- Row 5: blank
- Row 6: 7
- Row 7: blank
- Row 8: 9
- Row 9: 10

Hmm, this doesn't follow a simple pattern. Let me look at other columns to understand better.

Column 2: 11, _, 13, _, 15, _, 17, _, 20
- Starting with 11, then blank, 13, blank, 15, blank, 17, blank, 20
- Pattern: 11, 13, 15, 17, 20 (mostly odd numbers increasing by 2, but ends with 20)
- Missing: between 11 and 13, between 13 and 15, between 15 and 17, between 17 and 20

Wait, let me reconsider the structure. Looking at the full grid again:

The grid has 5 columns and appears to have specific numbers given with blanks to fill in. Let me check each column systematically:

Column 1: 1, 3, _, 5, _, 7, _, 9, 10
If this is counting by 1s or following a sequence... Let me think differently.

Actually, looking at the LAST row: 10, 20, 30, 40, 50 - these are multiples of 10!

And the FIRST row: 1, 11, 21, 31, 41 - these all end in 1!

Let me check if each column follows a pattern of adding 10:

Column 1: Should be 1, 11, 21, 31, 41... but we see 1, 3, _, 5, _, 7, _, 9, 10
That doesn't match.

Let me try reading it as rows instead:

Row 1: 1, 11, 21, 31, 41 (all end in 1, increase by 10)
Row 2: _, _, _, _, _ (all blank)
Row 3: 3, 13, 23, 33, 43 (all end in 3, increase by 10)
Row 4: _, _, _, _, _ (all blank)
Row 5: 5, 15, 25, 35, 45 (all end in 5, increase by 10)
Row 6: _, _, _, _, _ (all blank)
Row 7: 7, 17, 27, 37, 47 (all end in 7, increase by 10)
Row 8: _, _, _, _, _ (all blank)
Row 9: 9, _, 29, _, 49 (pattern of ending in 9)
Row 10: 10, 20, 30, 40, 50 (multiples of 10)

Now I see the pattern! Each row has numbers that share the same ones digit, and they increase by 10 across columns.

So the missing numbers are:
- Row 2: 2, 12, 22, 32, 42 (all end in 2)
- Row 4: 4, 14, 24, 34, 44 (all end in 4)
- Row 6: 6, 16, 26, 36, 46 (all end in 6)
- Row 8: 8, 18, 28, 38, 48 (all end in 8)
- Row 9: Already has 9, 29, 49. Missing: 19, 39

Let me verify this makes sense by checking the complete grid would be:
```
1 11 21 31 41
2 12 22 32 42
3 13 23 33 43
4 14 24 34 44
5 15 25 35 45
6 16 26 36 46
7 17 27 37 47
8 18 28 38 48
9 19 29 39 49
10 20 30 40 50
```

Yes! This creates a perfect number chart from 1 to 50, arranged so that:
- Each row contains numbers with the same ones digit
- Each column increases by 10 as you go down

The missing numbers to fill in are:
- Row 2: 2, 12, 22, 32, 42
- Row 4: 4, 14, 24, 34, 44
- Row 6: 6, 16, 26, 36, 46
- Row 8: 8, 18, 28, 38, 48
- Row 9: 19, 39

Final Answer:
The missing numbers are:
- Second row: 2, 12, 22, 32, 42
- Fourth row: 4, 14, 24, 34, 44
- Sixth row: 6, 16, 26, 36, 46
- Eighth row: 8, 18, 28, 38, 48
- Ninth row (middle two blanks): 19, 39