Printable Logic Puzzles - Free Printable

The task involves filling in the missing numbers in a "Number Snake" addition worksheet. The goal is to follow the given addition rules (indicated by arrows and "+ values") to determine the missing numbers. Let's solve it step by step.

Step-by-Step Solution:

#### Top Row:
1. Start with 2.
- Add +1: \( 2 + 1 = 3 \).
- Next number is 3.

2. Move to the next column:
- Start with 9.
- Add +3: \( 9 + 3 = 12 \).
- Next number is 12.

3. Move to the next column:
- Start with 25.
- Add +6: \( 25 + 6 = 31 \).
- Next number is 31.

#### Second Row:
1. From 3 (top row):
- Add +2: \( 3 + 2 = 5 \).
- Next number is 5.

2. From 12 (top row):
- Add +2: \( 12 + 2 = 14 \).
- Next number is 14.

3. From 19 (top row):
- Add +3: \( 19 + 3 = 22 \).
- Next number is 22.

#### Third Row:
1. From 5 (second row):
- Add +3: \( 5 + 3 = 8 \).
- Next number is 8.

2. From 7 (second row):
- Add +5: \( 7 + 5 = 12 \).
- Next number is 12.

3. From 16 (second row):
- Add +6: \( 16 + 6 = 22 \).
- Next number is 22.

#### Fourth Row:
1. From 8 (third row):
- Add +2: \( 8 + 2 = 10 \).
- Next number is 10.

2. From 12 (third row):
- Add +1: \( 12 + 1 = 13 \).
- Next number is 13.

3. From 22 (third row):
- Add +3: \( 22 + 3 = 25 \).
- Next number is 25.

#### Fifth Row:
1. From 10 (fourth row):
- Add +4: \( 10 + 4 = 14 \).
- Next number is 14.

2. From 13 (fourth row):
- Add +4: \( 13 + 4 = 17 \).
- Next number is 17.

3. From 25 (fourth row):
- Add +2: \( 25 + 2 = 27 \).
- Next number is 27.

#### Sixth Row:
1. From 14 (fifth row):
- Add +3: \( 14 + 3 = 17 \).
- Next number is 17.

2. From 17 (fifth row):
- Add +2: \( 17 + 2 = 19 \).
- Next number is 19.

3. From 27 (fifth row):
- Add +1: \( 27 + 1 = 28 \).
- Next number is 28.

#### Seventh Row:
1. From 17 (sixth row):
- Add +3: \( 17 + 3 = 20 \).
- Next number is 20.

2. From 19 (sixth row):
- Add +4: \( 19 + 4 = 23 \).
- Next number is 23.

3. From 28 (sixth row):
- Add +1: \( 28 + 1 = 29 \).
- Next number is 29.

Final Answer:

The completed grid with all missing numbers filled in is:

```
2 → 3 → 9 → 12 → 25
↓+2 ↑+2 ↑+4 ↑+6
8 ← 5 → 7 → 16 → 19
↑+2 ↑+5 ↑+3
10 → 14 ← 12 → 18 ← 30
↑+4 ↑+1 ↑+3
17 ← 15 → 16 ← 21 → 28
↑+3 ↑+1 ↑+7
20 → 23 ← 21 → 24 ← 29
```

Thus, the final answer is:

\[
\boxed{8, 5, 7, 16, 19, 10, 14, 12, 18, 30, 17, 15, 16, 21, 28, 20, 23, 21, 24, 29}
\]