To solve this puzzle, we need to fill in the missing numbers in the grid. The title says "Write-Missing-Number 50–1", which means the numbers go from 50 down to 1.
Let's look at the pattern in the rows and columns.
Step 1: Check the rows (horizontal lines)
Look at the first row: `50`, `[blank]`, `48`, `[blank]`, `46`.
The numbers are going down by 1 each time:
50,
49, 48,
47, 46.
Let's check the second row: `[blank]`, `44`, `[blank]`, `42`, `[blank]`.
If the pattern continues from the row above, the number before 44 should be 45. Then 43, then 41.
So the row is:
45, 44,
43, 42,
41.
It looks like each row counts backward by 1s. Let's verify with another row.
Third row: `40`, `[blank]`, `38`, `[blank]`, `36`.
Missing numbers:
39 and
37.
Row: 40,
39, 38,
37, 36. This works.
Step 2: Check the columns (vertical lines) just to be sure
First column: `50`, `[blank]`, `40`, `[blank]`, `30`...
The numbers given are 50, 40, 30, 20, 10. They go down by 10s.
So the blanks would be 45? No, wait. Let's look closer.
Row 1 starts with 50.
Row 2 starts with 45 (we calculated).
Row 3 starts with 40.
Row 4 starts with 35 (calculated).
Row 5 starts with 30.
So the first column is: 50, 45, 40, 35, 30, 25, 20, 15, 10, 5.
This confirms our row-by-row strategy is correct. Each new row starts with a number 5 less than the start of the previous row.
Step 3: Fill in all the missing numbers row by row
*
Row 1: 50,
49, 48,
47, 46
*
Row 2: 45, 44,
43, 42,
41
*
Row 3: 40,
39, 38,
37, 36
*
Row 4: 35, 34,
33, 32,
31
*
Row 5: 30,
29, 28,
27, 26
*
Row 6: 25, 24,
23, 22,
21
*
Row 7: 20,
19, 18,
17, 16
*
Row 8: 15, 14,
13, 12,
11
*
Row 9: 10,
9, 8,
7, 6
*
Row 10: 5, 4,
3, 2,
1
Verification:
Let's double-check a few random spots.
- Row 6, middle number: We said 23. The neighbors are 24 and 22. Yes, 23 fits.
- Row 10, last number: We said 1. The neighbor is 2. Yes, counting down ends at 1.
- Column 3 (middle): 48, 43, 38, 33, 28, 23, 18, 13, 8, 3. These all end in 8 or 3 and go down by 10. Correct.
Here is the complete grid with the filled-in numbers in bold:
| 50 |
49 | 48 |
47 | 46 |
| :---: | :---: | :---: | :---: | :---: |
|
45 | 44 |
43 | 42 |
41 |
| 40 |
39 | 38 |
37 | 36 |
|
35 | 34 |
33 | 32 |
31 |
| 30 |
29 | 28 |
27 | 26 |
|
25 | 24 |
23 | 22 |
21 |
| 20 |
19 | 18 |
17 | 16 |
|
15 | 14 |
13 | 12 |
11 |
| 10 |
9 | 8 |
7 | 6 |
|
5 | 4 |
3 | 2 |
1 |
Final Answer:
The missing numbers to fill in the blanks, reading from left to right, top to bottom, are:
49, 47, 45, 43, 41, 39, 37, 35, 33, 31, 29, 27, 25, 23, 21, 19, 17, 15, 13, 11, 9, 7, 5, 3, 1.
Parent Tip: Review the logic above to help your child master the concept of counting to 50 worksheet.
