Ordering numbers worksheet with a fun airplane theme for children to practice number sequencing.

Problem Analysis:

The task involves identifying patterns in sequences of numbers and writing them in the correct order. Each row contains a sequence of numbers with some missing, and the goal is to fill in the missing numbers based on the observed pattern.

Step-by-Step Solution:

#### Row 1:
- Numbers given: `12, 14, 16, 18`
- Pattern: The numbers increase by 2 each time.
- Missing number: None (all numbers are present).
- Ordered sequence: `12, 14, 16, 18`

#### Row 2:
- Numbers given: `7, 5, 3`
- Pattern: The numbers decrease by 2 each time.
- Missing numbers: `9, 7, 5, 3`
- Ordered sequence: `9, 7, 5, 3`

#### Row 3:
- Numbers given: `42, 30, 18, 6`
- Pattern: The numbers decrease by 12 each time.
- Missing numbers: `42, 30, 18, 6`
- Ordered sequence: `42, 30, 18, 6`

#### Row 4:
- Numbers given: `7, 11, 15, 19`
- Pattern: The numbers increase by 4 each time.
- Missing numbers: `7, 11, 15, 19`
- Ordered sequence: `7, 11, 15, 19`

#### Row 5:
- Numbers given: `14, 21, 28, 35`
- Pattern: The numbers increase by 7 each time.
- Missing numbers: `14, 21, 28, 35`
- Ordered sequence: `14, 21, 28, 35`

#### Row 6:
- Numbers given: `53, 62, 71, 80`
- Pattern: The numbers increase by 9 each time.
- Missing numbers: `53, 62, 71, 80`
- Ordered sequence: `53, 62, 71, 80`

Final Answer:

The completed sequences are as follows:

1. `12, 14, 16, 18`
2. `9, 7, 5, 3`
3. `42, 30, 18, 6`
4. `7, 11, 15, 19`
5. `14, 21, 28, 35`
6. `53, 62, 71, 80`

$$
\boxed{
\begin{array}{l}
12, 14, 16, 18 \\
9, 7, 5, 3 \\
42, 30, 18, 6 \\
7, 11, 15, 19 \\
14, 21, 28, 35 \\
53, 62, 71, 80
\end{array}
}
$$