It looks like you've uploaded a
"Number Bonds" worksheet designed to help students practice addition and subtraction using number bonds, often with the aid of a number line. However, since I can't view images directly, I'll explain how to solve this type of problem based on the description and common structure of such worksheets.
---
🔍 Understanding the Worksheet
The worksheet likely contains
apple-shaped diagrams (or similar) with numbers in them, where:
- Each apple is divided into two parts:
top and
bottom.
- The
top part has a total (sum), and one or both
bottom parts have missing numbers.
- Students are expected to use
number bonds — pairs of numbers that add up to a given total — to fill in the missing numbers.
For example:
```
15
/ \
6 ?
```
Here, you’d find what number added to 6 makes 15 →
9, so the missing number is
9.
---
✔ How to Solve These Problems
You’ll need to determine which number is missing in each bond. Use the rule:
>
Top = Bottom Left + Bottom Right
So, if one bottom number is missing:
- Subtract the known bottom number from the top number.
#### Example:
If the top number is
17, and one bottom number is
6, then:
- Missing number = 17 − 6 =
11
---
🧮 Let's Work Through a Few Examples (Based on Typical Layout)
Assuming the worksheet has problems like:
1.
```
15
/ \
6 ?
```
→ ? = 15 − 6 =
9
2.
```
17
/ \
6 ?
```
→ ? = 17 − 6 =
11
3.
```
11
/ \
3 ?
```
→ ? = 11 − 3 =
8
4.
```
18
/ \
12
```
→ ? = 18 − 12 =
6
5.
```
17
/ \
3 ?
```
→ ? = 17 − 3 =
14
6.
```
10
/ \
7
```
→ ? = 10 − 7 =
3
7.
```
14
/ \
9 ?
```
→ ? = 14 − 9 =
5
8.
```
12
/ \
5
```
→ ? = 12 − 5 =
7
9.
```
4
/ \
2
```
→ ? = 4 − 2 =
2
10.
```
19
/ \
7 ?
```
→ ? = 19 − 7 =
12
11.
```
20
/ \
11 ?
```
→ ? = 20 − 11 =
9
12.
```
13
/ \
6 ?
```
→ ? = 13 − 6 =
7
13.
```
16
/ \
12 ?
```
→ ? = 16 − 12 =
4
14.
```
12
/ \
5 ?
```
→ ? = 12 − 5 =
7
15.
```
10
/ \
1
```
→ ? = 10 − 1 =
9
16.
```
14
/ \
2 ?
```
→ ? = 14 − 2 =
12
17.
```
15
/ \
14 ?
```
→ ? = 15 − 14 =
1
18.
```
17
/ \
12 ?
```
→ ? = 17 − 12 =
5
19.
```
19
/ \
15 ?
```
→ ? = 19 − 15 =
4
---
📌 Final Answer Format
You would write the missing number in the blank circle (the empty part of the apple). For example:
```
15
/ \
6 9
```
---
✔ Tips for Solving:
- Always check:
Top = Bottom Left + Bottom Right
- If only one bottom number is given, subtract it from the top.
- If both bottoms are missing, think of all possible pairs that make the top number (e.g., 10 = 5+5, 6+4, etc.), but usually one pair is implied by context.
---
🛠️ How to Help Students:
- Use a
number line as suggested: Count forward or backward.
- Practice mental math: "What do I add to 6 to get 15?"
---
If you can describe the exact layout or provide the numbers in a specific row or column, I can give more targeted answers!
Parent Tip: Review the logic above to help your child master the concept of 1st grade math activities.
