Problem Overview:
The task involves completing number bonds. A
number bond is a visual representation of how numbers can be split into parts. In this case, each number bond shows a total (18) at the top, and two parts below it that add up to the total.
The goal is to fill in the missing part in each number bond so that the sum of the two parts equals 18.
---
Solution Approach:
For each number bond:
1. Identify the total (which is always 18).
2. Identify the given part.
3. Calculate the missing part by subtracting the given part from the total:
\[
\text{Missing part} = \text{Total} - \text{Given part}
\]
Let's solve each number bond step by step.
---
Number Bond 1:
- Total: 18
- Given part: 9
- Missing part:
\[
18 - 9 = 9
\]
- Answer: 9
---
Number Bond 2:
- Total: 18
- Given part: 7
- Missing part:
\[
18 - 7 = 11
\]
- Answer: 11
---
Number Bond 3:
- Total: 18
- Given part: 12
- Missing part:
\[
18 - 12 = 6
\]
- Answer: 6
---
Number Bond 4:
- Total: 18
- Given part: 5
- Missing part:
\[
18 - 5 = 13
\]
- Answer: 13
---
Number Bond 5:
- Total: 18
- Given part: 2
- Missing part:
\[
18 - 2 = 16
\]
- Answer: 16
---
Number Bond 6:
- Total: 18
- Given part: 15
- Missing part:
\[
18 - 15 = 3
\]
- Answer: 3
---
Number Bond 7:
- Total: 18
- Given part: 4
- Missing part:
\[
18 - 4 = 14
\]
- Answer: 14
---
Number Bond 8:
- Total: 18
- Given part: 1
- Missing part:
\[
18 - 1 = 17
\]
- Answer: 17
---
Number Bond 9:
- Total: 18
- Given part: 10
- Missing part:
\[
18 - 10 = 8
\]
- Answer: 8
---
Final Answers:
\[
\boxed{9, 11, 6, 13, 16, 3, 14, 17, 8}
\]
Parent Tip: Review the logic above to help your child master the concept of 2nd grade number bond worksheet.
