Single-digit addition facts worksheet for elementary math practice.

The image you uploaded is a worksheet titled "Single-Digit Addition Facts (A)" from Math-Drills.com. The task involves calculating the sum of each pair of single-digit numbers provided in the table.

Solution and Explanation:

To solve this problem, we need to add each pair of numbers in the table. Here’s how to approach it step by step:

1. Understand the Structure: The worksheet consists of rows and columns where each cell contains a pair of single-digit numbers. You need to calculate the sum of these pairs.

2. Perform the Addition: For each pair of numbers, simply add them together. For example:
- \( 4 + 2 = 6 \)
- \( 6 + 2 = 8 \)
- \( 6 + 8 = 14 \)
- \( 7 + 2 = 9 \)

3. Fill in the Answers: Write the sum in the corresponding blank space next to each pair.

Example Calculations:

Here are a few examples to illustrate the process:

- First Row:
- \( 4 + 2 = 6 \)
- \( 6 + 2 = 8 \)
- \( 6 + 8 = 14 \)
- \( 7 + 2 = 9 \)

- Second Row:
- \( 2 + 7 = 9 \)
- \( 8 + 6 = 14 \)
- \( 8 + 7 = 15 \)
- \( 9 + 4 = 13 \)

- Third Row:
- \( 5 + 9 = 14 \)
- \( 1 + 7 = 8 \)
- \( 5 + 4 = 9 \)
- \( 1 + 9 = 10 \)

Complete Solution:

Below is the complete solution for the entire worksheet. Each sum is calculated and filled in:

```
Single-Digit Addition Facts (A)

Calculate each sum.

4 + 2 = 6 6 + 2 = 8 6 + 8 = 14 7 + 2 = 9
2 + 7 = 9 8 + 6 = 14 8 + 7 = 15 9 + 4 = 13
5 + 9 = 14 1 + 7 = 8 5 + 4 = 9 1 + 9 = 10
2 + 2 = 4 9 + 8 = 17 9 + 5 = 14 8 + 7 = 15
3 + 5 = 8 5 + 8 = 13 9 + 6 = 15 7 + 9 = 16
2 + 8 = 10 4 + 6 = 10 4 + 1 = 5 8 + 9 = 17
9 + 9 = 18 9 + 1 = 10 7 + 4 = 11 7 + 3 = 10
4 + 8 = 12 6 + 6 = 12 2 + 6 = 8 7 + 6 = 13
5 + 7 = 12 6 + 5 = 11 8 + 6 = 14 8 + 9 = 17
1 + 8 = 9 7 + 6 = 13 1 + 2 = 3 6 + 1 = 7
1 + 9 = 10 4 + 7 = 11 3 + 2 = 5 7 + 6 = 13
1 + 4 = 5 9 + 5 = 14 9 + 3 = 12 8 + 8 = 16
8 + 3 = 11 4 + 9 = 13 5 + 4 = 9 5 + 9 = 14
6 + 4 = 10 9 + 3 = 12 1 + 3 = 4 2 + 9 = 11
8 + 1 = 9 8 + 4 = 12 6 + 5 = 11 1 + 1 = 2
2 + 3 = 5 1 + 1 = 2 4 + 9 = 13 4 + 9 = 13
2 + 4 = 6 6 + 4 = 10 7 + 3 = 10 4 + 4 = 8
5 + 3 = 8 2 + 9 = 11 9 + 4 = 13 1 + 8 = 9
7 + 4 = 11 1 + 7 = 8 9 + 8 = 17 1 + 1 = 2
5 + 6 = 11 1 + 2 = 3 6 + 1 = 7 8 + 5 = 13
7 + 1 = 8 5 + 7 = 12 3 + 7 = 10 7 + 8 = 15
3 + 2 = 5 9 + 2 = 11 5 + 9 = 14 5 + 1 = 6
9 + 7 = 16 9 + 7 = 16 2 + 2 = 4 2 + 6 = 8
4 + 4 = 8 8 + 4 = 12 6 + 7 = 13 9 + 8 = 17
5 + 2 = 7 3 + 6 = 9 2 + 6 = 8 2 + 1 = 3
```

Final Answer:

\[
\boxed{
\begin{array}{cccc}
6 & 8 & 14 & 9 \\
9 & 14 & 15 & 13 \\
14 & 8 & 9 & 10 \\
4 & 17 & 14 & 15 \\
8 & 13 & 15 & 16 \\
10 & 10 & 5 & 17 \\
18 & 10 & 11 & 10 \\
12 & 12 & 8 & 13 \\
12 & 11 & 14 & 17 \\
9 & 13 & 3 & 7 \\
10 & 11 & 5 & 13 \\
5 & 14 & 12 & 16 \\
11 & 13 & 9 & 14 \\
10 & 12 & 4 & 11 \\
9 & 12 & 11 & 2 \\
5 & 2 & 13 & 13 \\
6 & 10 & 10 & 8 \\
8 & 11 & 13 & 9 \\
11 & 8 & 17 & 2 \\
11 & 3 & 7 & 13 \\
8 & 12 & 10 & 15 \\
5 & 11 & 14 & 6 \\
16 & 16 & 4 & 8 \\
8 & 12 & 13 & 17 \\
7 & 9 & 8 & 3 \\
\end{array}
}
\]

This completes the worksheet. Each sum has been calculated and filled in accordingly.