The "Making 10" strategy is a helpful method in math, especially for addition, where you manipulate numbers to create a 10, making the problem easier to solve. According to the provided reference, it involves transforming one of the numbers in an addition problem into 10.
How the "Making 10" Strategy Works
Here's a breakdown of how the "Making 10" strategy is applied:
- Identify the Problem: Start with an addition problem, for example, 9 + 5.
- Target a Ten: Decide which number is closest to 10. In this case, 9 is closer to 10 than 5.
- Make Ten: Determine how much you need to add to the target number to make 10. For 9, you need to add 1 (9 + 1 = 10).
- Decompose the Other Number: Take the amount you added from the other number. Since you added 1 to 9, you need to take 1 from 5. 5 - 1 = 4.
- Rewrite and Solve: Rewrite the problem as 10 + the remaining part. So, 9 + 5 becomes 10 + 4.
- Final Answer: 10 + 4 = 14. Therefore, 9 + 5 = 14.
Example Table
| Step | Description | Example: 9 + 5 |
|---|---|---|
| 1. Original Problem | The initial addition problem. | 9 + 5 |
| 2. Make a Ten | Convert one number to 10. | 9 + 1 = 10 |
| 3. Decompose | Adjust the other number accordingly. | 5 - 1 = 4 |
| 4. Rewrite | Rewrite the problem using 10. | 10 + 4 |
| 5. Solve | Calculate the final answer. | 10 + 4 = 14 |
| 6. Final Answer | The solution to the original problem. | Therefore, 9 + 5 = 14 |
The "Making 10" strategy simplifies addition by leveraging the ease of working with the number 10. It's a visual and conceptual technique that can significantly improve a student's understanding of number relationships and mental math skills.
