Spring-themed hundreds chart worksheet for practicing number sequencing and mental math skills.

Let's solve the "Signs of Spring" worksheet step by step. The goal is to fill in the missing numbers in each 3x3 grid so that they follow the pattern of a hundreds chart, where:

- Numbers increase by 1 moving right.
- Numbers increase by 10 moving down.

We’ll go through each sign (grid) one by one and fill in the blanks.

---

🔹 Grid 1:

```
? 44 ?
53 ? 55
64 ? ?
```

We know:
- 44 is in the top middle → So left = 43, right = 45
- 53 is below 43 → So 53 is correct (43 + 10)
- 55 is to the right of 54 → So middle of second row is 54
- 64 is below 54 → So bottom left is 64
- Then 65 (right of 64), 66 (right of 65)

Now fill in:
```
43 44 45
53 54 55
63 64 65
```

✔ Completed.

---

🔹 Grid 2:

```
? 27 ?
36 37 ?
? 47 ?
```

We see:
- 27 is top middle → Left = 26, Right = 28
- 36 and 37 are below → So 36 is below 26? Wait — 36 is under 26? But 26 → 36 is +10 → yes!
- So:
- Top: 26, 27, 28
- Middle: 36, 37, 38
- Bottom: 46, 47, 48

But we have 47 already in bottom middle → so bottom left = 46, bottom right = 48

So:
```
26 27 28
36 37 38
46 47 48
```

✔ Completed.

---

🔹 Grid 3:

```
? 39 ?
48 ? 50
? 59 ?
```

Look at:
- 39 is top middle → left = 38, right = 40
- 48 is below 38 → yes, +10
- 50 is to the right of 49 → so middle center = 49
- 59 is below 49 → yes, +10
- So bottom left = 58, bottom right = 60

Fill in:
```
38 39 40
48 49 50
58 59 60
```

✔ Completed.

---

🔹 Grid 4:

```
? 16 ?
? 26 27
? 36 ?
```

We have:
- 16 is top middle → left = 15, right = 17
- 26 is below 16 → 16 + 10 = 26 → correct
- 27 is to the right of 26 → correct
- 36 is below 26 → 26 + 10 = 36 → correct
- So bottom left = 35, bottom right = 37

Top row: 15, 16, 17
Middle: 25, 26, 27
Bottom: 35, 36, 37

Wait — but we don’t have 25 or 35 yet.

But let’s check: 25 should be left of 26 → yes
35 should be left of 36 → yes

So:
```
15 16 17
25 26 27
35 36 37
```

✔ Completed.

---

🔹 Grid 5:

```
? 52 ?
61 62 ?
? 72 ?
```

52 is top middle → left = 51, right = 53
61 is below 51 → 51 + 10 = 61 → good
62 is to the right of 61 → good
Then 63 is next → so middle right = 63
72 is below 62 → 62 + 10 = 72 → good
So bottom left = 71, bottom right = 73

So:
```
51 52 53
61 62 63
71 72 73
```

✔ Completed.

---

🔹 Grid 6:

```
? 48 ?
57 ? ?
68 69 ?
```

48 is top middle → left = 47, right = 49
57 is below 47 → 47 + 10 = 57 → good
Then 58 is to the right of 57 → so middle center = 58
59 is to the right of 58 → so middle right = 59
68 is below 58 → 58 + 10 = 68 → good
69 is to the right of 68 → good
Then bottom right = 70

So:
```
47 48 49
57 58 59
67 68 69
```

Wait! We have 68 and 69 already, but what about bottom left?

67 is below 57 → 57 + 10 = 67 → yes

So bottom left = 67

Final:
```
47 48 49
57 58 59
67 68 69
```

✔ Completed.

---

🔹 Grid 7:

```
? 33 ?
42 ? 44
53 ? ?
```

33 is top middle → left = 32, right = 34
42 is below 32 → 32 + 10 = 42 → good
44 is to the right of 43 → so middle center = 43
53 is below 43 → 43 + 10 = 53 → good
Then bottom right = 54

So:
```
32 33 34
42 43 44
52 53 54
```

✔ Completed.

---

🔹 Grid 8:

```
? 65 ?
74 75 ?
85 ? ?
```

65 is top middle → left = 64, right = 66
74 is below 64 → 64 + 10 = 74 → good
75 is to the right of 74 → good
Then 76 is to the right of 75 → so middle right = 76
85 is below 75 → 75 + 10 = 85 → good
Then bottom center = 86, bottom right = 87

So:
```
64 65 66
74 75 76
84 85 86
```

Wait — bottom left = 84? Is that correct?

Yes: 74 + 10 = 84 → so bottom left = 84

And 85 → 86 → 87

So final:
```
64 65 66
74 75 76
84 85 86
```

✔ Completed.

---

🔹 Grid 9:

```
? 19 ?
28 ? 30
? 39 ?
```

19 is top middle → left = 18, right = 20
28 is below 18 → 18 + 10 = 28 → good
30 is to the right of 29 → so middle center = 29
39 is below 29 → 29 + 10 = 39 → good
Then bottom left = 38, bottom right = 40

So:
```
18 19 20
28 29 30
38 39 40
```

✔ Completed.

---

✔ Final Answer Summary:

Here are all completed grids:

1.
```
43 44 45
53 54 55
63 64 65
```

2.
```
26 27 28
36 37 38
46 47 48
```

3.
```
38 39 40
48 49 50
58 59 60
```

4.
```
15 16 17
25 26 27
35 36 37
```

5.
```
51 52 53
61 62 63
71 72 73
```

6.
```
47 48 49
57 58 59
67 68 69
```

7.
```
32 33 34
42 43 44
52 53 54
```

8.
```
64 65 66
74 75 76
84 85 86
```

9.
```
18 19 20
28 29 30
38 39 40
```

---

📝 Explanation:

Each grid is a portion of a hundreds chart. The key is recognizing:
- Each row increases by 1 from left to right.
- Each column increases by 10 from top to bottom.

By using known numbers, you can work backward and forward to find missing values.

This exercise helps students practice number sense, counting patterns, and understanding place value (tens and ones).

Let me know if you'd like a printable version or a filled-in image!