To solve this 100 chart puzzle, we need to fill in the missing numbers by counting up from 1 to 100. The chart is arranged in rows of 10.
Step-by-Step Logic:
1.
Rows end in 0 or start with a new ten: Every row has 10 boxes. If a row starts with a number like 21, it ends with 30. The next row starts with 31.
2.
Counting forward: In any empty box, look at the number before it (to the left) and add 1. For example, if you see `2`, the next box is `3`.
3.
Checking columns: Numbers in the same vertical column usually end in the same digit (e.g., 3, 13, 23, 33 are all in the third column).
Filling in the Missing Numbers:
*
Row 1 (1–10): We have 1, 2, _, _, 5, 6, _, _, 9, 10.
* Missing:
3, 4, 7, 8
*
Row 2 (11–20): We have _, _, 13, 14, _, _, 17, 18, _, _.
* Starts after 10, so:
11, 12
* After 14 comes:
15, 16
* After 18 comes:
19, 20
*
Row 3 (21–30): We have 21, 22, _, _, 25, 26, _, _, 29, 30.
* Missing:
23, 24, 27, 28
*
Row 4 (31–40): We have _, _, 33, 34, _, _, 37, 38, _, _.
* Starts after 30, so:
31, 32
* After 34 comes:
35, 36
* After 38 comes:
39, 40
*
Row 5 (41–50): We have 41, 42, _, _, 45, 46, _, _, 49, 50.
* Missing:
43, 44, 47, 48
*
Row 6 (51–60): We have _, _, 53, 54, _, _, 57, 58, _, _.
* Starts after 50, so:
51, 52
* After 54 comes:
55, 56
* After 58 comes:
59, 60
*
Row 7 (61–70): We have 61, 62, _, _, 65, 66, _, _, 69, 70.
* Missing:
63, 64, 67, 68
*
Row 8 (71–80): We have _, _, 73, 74, _, _, 77, 78, _, _.
* Starts after 70, so:
71, 72
* After 74 comes:
75, 76
* After 78 comes:
79, 80
*
Row 9 (81–90): We have 81, 82, _, _, 85, 86, _, _, 89, 90.
* Missing:
83, 84, 87, 88
*
Row 10 (91–100): We have _, _, 93, 94, _, _, 97, 98, _, _.
* Starts after 90, so:
91, 92
* After 94 comes:
95, 96
* After 98 comes:
99, 100
Final Answer:
Here are the missing numbers for each row, from top to bottom:
Row 1: 3, 4, 7, 8
Row 2: 11, 12, 15, 16, 19, 20
Row 3: 23, 24, 27, 28
Row 4: 31, 32, 35, 36, 39, 40
Row 5: 43, 44, 47, 48
Row 6: 51, 52, 55, 56, 59, 60
Row 7: 63, 64, 67, 68
Row 8: 71, 72, 75, 76, 79, 80
Row 9: 83, 84, 87, 88
Row 10: 91, 92, 95, 96, 99, 100
Parent Tip: Review the logic above to help your child master the concept of missing numbers 1 100 worksheet.
