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To complete the two-way table, we will fill in the missing values based on the provided data and totals. Here's what we have so far:

|         | Year 9 | Year 11 | Total |
|---------|--------|---------|-------|
| **Pet** | 16     | 6       | ?     |
| **No Pet** | 25  | ?       | ?     |
| **Total** | 41   | ?       | 70    |

1. **Fill the Total for "Pet" row**:  
   The total number of students who have pets is calculated by adding the number of Year 9 students with pets to the number of Year 11 students with pets.  
   \( 16 + 6 = 22 \)  
   So, the total for the "Pet" row is **22**.

2. **Find the number of Year 11 students**:  
   The total number of Year 11 students can be calculated by subtracting the number of Year 9 students from the total number of students.  
   \( 70 - 41 = 29 \)  
   So, the total number of Year 11 students is **29**.

3. **Find the number of Year 11 students without pets**:  
   Subtract the number of Year 11 students with pets from the total number of Year 11 students.  
   \( 29 - 6 = 23 \)  
   So, there are **23** Year 11 students without pets.

4. **Find the total number of students without pets**:  
   Add the number of Year 9 students without pets and the number of Year 11 students without pets.  
   \( 25 + 23 = 48 \)  
   So, the total number of students without pets is **48**.

Now the completed table looks like this:

|         | Year 9 | Year 11 | Total |
|---------|--------|---------|-------|
| **Pet** | 16     | 6       | 22    |
| **No Pet** | 25  | 23      | 48    |
| **Total** | 41   | 29      | 70    |

Would you like further explanation, or do you have any additional questions?

Here are 5 relative questions for further practice:
1. How would you calculate the percentage of Year 9 students who have pets?
2. What fraction of all students have pets?
3. How many more Year 11 students do not have pets compared to those who do?
4. If 5 more Year 9 students got pets, how would that change the table?
5. What is the ratio of students without pets to those with pets?

**Tip**: When working with tables, double-check that both the row and column totals match the grand total for consistency.

Complete the two-way table given some partial information for Year 9 and Year 11 students.

Learn how to complete a two-way table using basic arithmetic skills. This example uses data from Year 9 and Year 11 students to teach the concepts of data organization and problem solving. Suitable for middle school students interested in enhancing their math skills.

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