Math worksheet for practicing addition with number bonds up to 10.

The image you uploaded is a worksheet titled "Sum up to 10," which involves calculating the sum of numbers in number bonds. Number bonds are visual representations that show how numbers can be split into parts or combined to form a whole. Each number bond consists of three circles: two smaller circles at the bottom and one larger circle at the top. The two smaller circles represent the parts, and the larger circle represents the whole (the sum).

Step-by-Step Solution:

#### Example Problem:
Let's take one of the number bonds as an example:
```
7
/ \
3 ?
```
Here, the top circle (the whole) is 7, and one of the parts is 3. We need to find the missing part.

#### Steps to Solve:
1. Identify the given values: The whole is 7, and one part is 3.
2. Set up the equation: The sum of the parts equals the whole. So, \( 3 + ? = 7 \).
3. Solve for the missing part: Subtract the known part from the whole: \( 7 - 3 = 4 \).
4. Write the answer: The missing part is 4.

#### General Approach:
For each number bond:
- Identify the whole (top circle).
- Identify the known part(s) (bottom circles).
- Use addition or subtraction to find the missing part.

Solving All Number Bonds:

#### Number Bond 1:
```
5
/ \
2 ?
```
- Whole: 5
- Known part: 2
- Missing part: \( 5 - 2 = 3 \)
- Answer: 3

#### Number Bond 2:
```
8
/ \
4 ?
```
- Whole: 8
- Known part: 4
- Missing part: \( 8 - 4 = 4 \)
- Answer: 4

#### Number Bond 3:
```
6
/ \
1 ?
```
- Whole: 6
- Known part: 1
- Missing part: \( 6 - 1 = 5 \)
- Answer: 5

#### Number Bond 4:
```
9
/ \
5 ?
```
- Whole: 9
- Known part: 5
- Missing part: \( 9 - 5 = 4 \)
- Answer: 4

#### Number Bond 5:
```
7
/ \
6 ?
```
- Whole: 7
- Known part: 6
- Missing part: \( 7 - 6 = 1 \)
- Answer: 1

#### Number Bond 6:
```
10
/ \
7 ?
```
- Whole: 10
- Known part: 7
- Missing part: \( 10 - 7 = 3 \)
- Answer: 3

#### Number Bond 7:
```
4
/ \
1 ?
```
- Whole: 4
- Known part: 1
- Missing part: \( 4 - 1 = 3 \)
- Answer: 3

#### Number Bond 8:
```
6
/ \
3 ?
```
- Whole: 6
- Known part: 3
- Missing part: \( 6 - 3 = 3 \)
- Answer: 3

#### Number Bond 9:
```
8
/ \
2 ?
```
- Whole: 8
- Known part: 2
- Missing part: \( 8 - 2 = 6 \)
- Answer: 6

#### Number Bond 10:
```
9
/ \
4 ?
```
- Whole: 9
- Known part: 4
- Missing part: \( 9 - 4 = 5 \)
- Answer: 5

Final Answers:

1. 3
2. 4
3. 5
4. 4
5. 1
6. 3
7. 3
8. 3
9. 6
10. 5

Boxed Final Answer:

\[
\boxed{3, 4, 5, 4, 1, 3, 3, 3, 6, 5}
\]