2nd Grade Christmas Math Worksheets - Free Printable

Let's solve the Christmas Tree Adding Challenge 2B step by step.

🔍 Rule:

> Each missing number is the total of the two numbers below it.

This means we work from the bottom up, adding adjacent numbers to fill in the blanks above.

We have four Christmas trees, each made of hexagons arranged in a pyramid shape. The bottom row has numbers, and we need to fill in the upper rows by adding the two numbers directly below each hexagon.

---

## 🎄 Tree 1 (Top Left)

Given:
```
?
? ?
? ? ?
7 ? 1 3
2 5 ? ? ?
```

Wait — actually, let's reconstruct this properly based on the image.

From the image:

Bottom row (level 1):
`2`, `5`, `1`, `3`

Level 2 (above):
One number is given: `7` is above `2` and `5`.

So:
- Above `2` and `5`: `2 + 5 = 7` ✔ (already filled)

Now we can fill in the rest.

Let’s label levels from bottom up:

Level 1 (bottom):

`2`, `5`, `1`, `3`

Level 2:

- Between `2` and `5`: `2+5 = 7` ✔ (given)
- Between `5` and `1`: `5+1 = 6`
- Between `1` and `3`: `1+3 = 4`

So Level 2: `7`, `6`, `4`

Level 3:

- Between `7` and `6`: `7+6 = 13`
- Between `6` and `4`: `6+4 = 10`

Level 3: `13`, `10`

Level 4:

- Between `13` and `10`: `13+10 = 23`

Level 5 (top):

- Only one cell: `23`

✔ So Tree 1 is complete:
```
23
13 10
7 6 4
2 5 1 3
```

---

## 🎄 Tree 2 (Top Right)

Bottom row: `4`, `2`, `3`, `5`

Level 2:

- `4+2 = 6`
- `2+3 = 5`
- `3+5 = 8`

→ Level 2: `6`, `5`, `8`

Level 3:

- `6+5 = 11`
- `5+8 = 13`

→ Level 3: `11`, `13`

Level 4:

- `11+13 = 24`

→ Top: `24`

✔ Tree 2:
```
24
11 13
6 5 8
4 2 3 5
```

---

## 🎄 Tree 3 (Bottom Left)

Bottom row: `8`, `0`, `3`, `4`

Level 2:

- `8+0 = 8`
- `0+3 = 3`
- `3+4 = 7`

→ Level 2: `8`, `3`, `7`

Level 3:

- `8+3 = 11`
- `3+7 = 10`

→ Level 3: `11`, `10`

Level 4:

- `11+10 = 21`

→ Top: `21`

✔ Tree 3:
```
21
11 10
8 3 7
8 0 3 4
```

---

## 🎄 Tree 4 (Bottom Right)

Bottom row: `3`, `4`, `2`, `7`

Level 2:

- `3+4 = 7`
- `4+2 = 6`
- `2+7 = 9`

→ Level 2: `7`, `6`, `9`

Level 3:

- `7+6 = 13`
- `6+9 = 15`

→ Level 3: `13`, `15`

Level 4:

- `13+15 = 28`

→ Top: `28`

✔ Tree 4:
```
28
13 15
7 6 9
3 4 2 7
```

---

✔ Final Answers:

| Tree | Top Number |
|------|------------|
| 1 | 23 |
| 2 | 24 |
| 3 | 21 |
| 4 | 28 |

You can now fill in the blank hexagons accordingly.

---

💡 Summary of How to Solve:

1. Start from the bottom row.
2. Add adjacent pairs to get the number above.
3. Work upward level by level.
4. The top number is the sum of all the bottom numbers, but structured via a binary tree addition.

> This is similar to Pascal’s triangle or a number pyramid.

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Let me know if you'd like a printable version or a visual diagram! 🎄✨