Number bonds worksheet for 1st grade math practice.

Problem Explanation:

The task involves completing number bonds. A number bond is a visual representation of how numbers can be split into parts that add up to the whole. For example, in the given example \(4 + 3 = 7\), the number bond shows:

```
7
/ \
4 3
```

Here, the top circle represents the total (whole number), and the bottom circles represent the parts that add up to the total.

Task:

Complete each number bond by filling in the missing numbers.

Solution:

#### Number Bond 1:
```
?
/ \
2 2
```
- The two parts are 2 and 2.
- Adding them together: \(2 + 2 = 4\).
- So, the total is 4.

Completed number bond:
```
4
/ \
2 2
```

#### Number Bond 2:
```
?
/ \
3 7
```
- The two parts are 3 and 7.
- Adding them together: \(3 + 7 = 10\).
- So, the total is 10.

Completed number bond:
```
10
/ \
3 7
```

#### Number Bond 3:
```
?
/ \
1 6
```
- The two parts are 1 and 6.
- Adding them together: \(1 + 6 = 7\).
- So, the total is 7.

Completed number bond:
```
7
/ \
1 6
```

#### Number Bond 4:
```
?
/ \
2 1
```
- The two parts are 2 and 1.
- Adding them together: \(2 + 1 = 3\).
- So, the total is 3.

Completed number bond:
```
3
/ \
2 1
```

#### Number Bond 5:
```
6
/ \
3 ?
```
- The total is 6, and one part is 3.
- To find the missing part: \(6 - 3 = 3\).
- So, the missing part is 3.

Completed number bond:
```
6
/ \
3 3
```

#### Number Bond 6:
```
8
/ \
? 3
```
- The total is 8, and one part is 3.
- To find the missing part: \(8 - 3 = 5\).
- So, the missing part is 5.

Completed number bond:
```
8
/ \
5 3
```

Final Answer:

```
4 10 7
/ \ / \ / \
2 2 3 7 1 6

3 6 8
/ \ / \ / \
2 1 3 3 5 3
```

\boxed{
\begin{array}{ccc}
4 & 10 & 7 \\
/ \backslash & / \backslash & / \backslash \\
2 & 2 & 3 & 7 & 1 & 6 \\
& & & & & \\
3 & 6 & 8 \\
/ \backslash & / \backslash & / \backslash \\
2 & 1 & 3 & 3 & 5 & 3 \\
\end{array}
}