Problem Description:
The task involves filling in the missing numbers in the "number bonds" diagrams. A number bond is a visual representation that shows how numbers can be split into parts or combined to form a whole. Each diagram consists of a top circle with a total number, and two bottom circles representing the parts that add up to the total.
Solution Approach:
For each number bond, we need to determine the missing number by using the relationship:
\[
\text{Total} = \text{Part 1} + \text{Part 2}
\]
If one part is missing, we can find it using:
\[
\text{Missing Part} = \text{Total} - \text{Known Part}
\]
Step-by-Step Solution:
#### First Row:
1.
Top Number: 5
- Known Part: 4
- Missing Part: \( 5 - 4 = 1 \)
- Fill in: \( 1 \)
2.
Top Number: 8
- Known Part: 3
- Missing Part: \( 8 - 3 = 5 \)
- Fill in: \( 5 \)
3.
Top Number: 3
- Known Part: 2
- Missing Part: \( 3 - 2 = 1 \)
- Fill in: \( 1 \)
#### Second Row:
4.
Top Number: 7
- Known Part: 5
- Missing Part: \( 7 - 5 = 2 \)
- Fill in: \( 2 \)
5.
Top Number: 4
- Known Part: 2
- Missing Part: \( 4 - 2 = 2 \)
- Fill in: \( 2 \)
6.
Top Number: 9
- Known Part: 7
- Missing Part: \( 9 - 7 = 2 \)
- Fill in: \( 2 \)
#### Third Row:
7.
Top Number: 2
- Known Part: 1
- Missing Part: \( 2 - 1 = 1 \)
- Fill in: \( 1 \)
8.
Top Number: 10
- Known Part: 8
- Missing Part: \( 10 - 8 = 2 \)
- Fill in: \( 2 \)
9.
Top Number: 6
- Known Part: 3
- Missing Part: \( 6 - 3 = 3 \)
- Fill in: \( 3 \)
Final Answer:
The completed number bonds are as follows:
\[
\begin{array}{ccc}
5 & 8 & 3 \\
4 & 3 & 2 \\
1 & 5 & 1 \\
\end{array}
\]
\[
\begin{array}{ccc}
7 & 4 & 9 \\
5 & 2 & 7 \\
2 & 2 & 2 \\
\end{array}
\]
\[
\begin{array}{ccc}
2 & 10 & 6 \\
1 & 8 & 3 \\
1 & 2 & 3 \\
\end{array}
\]
\boxed{
\begin{array}{ccc}
5 & 8 & 3 \\
4 & 3 & 2 \\
1 & 5 & 1 \\
\end{array}
\quad
\begin{array}{ccc}
7 & 4 & 9 \\
5 & 2 & 7 \\
2 & 2 & 2 \\
\end{array}
\quad
\begin{array}{ccc}
2 & 10 & 6 \\
1 & 8 & 3 \\
1 & 2 & 3 \\
\end{array}
}
\]
Parent Tip: Review the logic above to help your child master the concept of addition number bond worksheet.
