How Do You Teach 3 Numbers to Add?

To teach adding three numbers, you can first combine two numbers, then add the sum to the remaining number.

Step-by-Step Guide to Adding Three Numbers

Here's how you can effectively teach the addition of three numbers, as demonstrated in the provided reference, and some added insights:

1. Start with a Pair:

   • Begin by selecting any two numbers from the three you need to add.
   • For example, if you're adding 4 + 3 + 7, you could start by adding 4 and 3.

2. Calculate the Sum:

   • Add the two chosen numbers together.
   • In the example, 4 + 3 equals 7.

3. Add the Remaining Number:

   • Take the sum you just found and add it to the remaining number.
   • Continuing with the example, add the first sum (7) to the remaining number (7), giving you 7 + 7.

4. Find the Final Sum:

   • Calculate the final addition result.
   • In our example, 7 + 7 equals 14.

Example Using The Reference

The reference shows us an example where they add 4 + 3 + 7. As shown, the example shows that you add the 4 and 3 first which equals 7. Then, they add the first sum, 7, to the remaining number, 7. This leads to the final sum of 14.

Key Concepts and Tips

• Commutative Property: The order you add the numbers doesn’t matter, you will get the same result (e.g., 4 + 3 + 7 is the same as 3 + 7 + 4). This is a very important thing to highlight when teaching students this concept.
• Doubles: As seen in the reference, it can be helpful to use doubles to help aid the students.
• Visual Aids: Use blocks, drawings, or number lines to help visualize the addition process.
• Real-World Examples: Provide real-world scenarios to make the concept relatable (e.g., "If you have 2 apples, then you get 3 more, then another 4, how many apples do you have?").

By following these steps and using effective teaching aids, you can teach how to add three numbers effectively.