Interactive math worksheet for children to practice identifying numbers that come before and after given numbers.

The task is to determine the numbers that come before and after each given number. This involves basic arithmetic: subtracting 1 from the given number to find the number before it, and adding 1 to the given number to find the number after it.

Let's solve it step by step for each number:

Given Numbers:

1. 10
2. 69
3. 16
4. 90
5. 42

Solution:

#### 1. For 10:
- Number before 10: \( 10 - 1 = 9 \)
- Number after 10: \( 10 + 1 = 11 \)

#### 2. For 69:
- Number before 69: \( 69 - 1 = 68 \)
- Number after 69: \( 69 + 1 = 70 \)

#### 3. For 16:
- Number before 16: \( 16 - 1 = 15 \)
- Number after 16: \( 16 + 1 = 17 \)

#### 4. For 90:
- Number before 90: \( 90 - 1 = 89 \)
- Number after 90: \( 90 + 1 = 91 \)

#### 5. For 42:
- Number before 42: \( 42 - 1 = 41 \)
- Number after 42: \( 42 + 1 = 43 \)

Final Answer:

\[
\begin{array}{c|c|c}
\text{Given Number} & \text{Number Before} & \text{Number After} \\
\hline
10 & 9 & 11 \\
69 & 68 & 70 \\
16 & 15 & 17 \\
90 & 89 & 91 \\
42 & 41 & 43 \\
\end{array}
\]

So, the completed worksheet would look like this:

\[
\begin{array}{c|c|c}
& \text{Before} & \text{After} \\
\hline
10 & 9 & 11 \\
69 & 68 & 70 \\
16 & 15 & 17 \\
90 & 89 & 91 \\
42 & 41 & 43 \\
\end{array}
\]

\boxed{
\begin{array}{c|c|c}
& \text{Before} & \text{After} \\
\hline
10 & 9 & 11 \\
69 & 68 & 70 \\
16 & 15 & 17 \\
90 & 89 & 91 \\
42 & 41 & 43 \\
\end{array}
}