Let's solve the problem step by step.
We are given a grid of numbers from 1 to 30, but some numbers are missing. The task is to
fill in the missing numbers so that the sequence from 1 to 30 is complete and in order.
Here’s the grid as shown:
```
| 1 | 2 | 3 | | 5 |
| 6 | | 8 | 9 | |
|11 |12 | | | |
|16 |17 | |19 | |
|21 | |23 | |25 |
| |27 | | |30 |
```
We’ll go row by row and fill in the missing numbers based on counting sequentially from 1 to 30.
---
Step 1: Fill in the first row
- 1, 2, 3, __, 5 → Missing number is
4
So first row becomes:
> 1, 2, 3,
4, 5
---
Step 2: Second row
- 6, __, 8, 9, __ → After 6 comes 7, then 8, 9, then 10
→ Missing numbers:
7 and
10
Second row:
> 6,
7, 8, 9,
10
---
Step 3: Third row
- 11, 12, __, __, __ → After 12 comes 13, 14, 15
→ Missing:
13,
14,
15
Third row:
> 11, 12,
13,
14,
15
---
Step 4: Fourth row
- 16, 17, __, 19, __ → After 17 comes 18, then 19, then 20
→ Missing:
18,
20
Fourth row:
> 16, 17,
18, 19,
20
---
Step 5: Fifth row
- 21, __, 23, __, 25 → After 21 comes 22, then 23, then 24, then 25
→ Missing:
22,
24
Fifth row:
> 21,
22, 23,
24, 25
---
Step 6: Sixth row
- __, 27, __, __, 30 → Before 27 is 26, after 27 is 28, then 29, then 30
→ So missing:
26,
28,
29
Sixth row:
>
26, 27,
28,
29, 30
---
Final Completed Grid:
```
| 1 | 2 | 3 | 4 | 5 |
| 6 | 7 | 8 | 9 |10 |
|11 |12 |13 |14 |15 |
|16 |17 |18 |19 |20 |
|21 |22 |23 |24 |25 |
|26 |27 |28 |29 |30 |
```
✔ All numbers from 1 to 30 are now filled in correctly.
---
Answer Summary:
The missing numbers are:
- Row 1:
4
- Row 2:
7,
10
- Row 3:
13,
14,
15
- Row 4:
18,
20
- Row 5:
22,
24
- Row 6:
26,
28,
29
You can now write these numbers into the blank spaces in the grid to complete it.
Parent Tip: Review the logic above to help your child master the concept of count to 30 worksheet.