Changing Order in Addition
What Does This Mean?
When you add two numbers, you can switch them around!
The answer stays the same!
Big Idea: 3 + 2 = 2 + 3
Let's See It With Apples!
Look at these two ways to add apples:
First Way: 3 + 2
3 red apples + 2 blue apples = 5 apples
Second Way: 2 + 3
2 blue apples + 3 red apples = 5 apples
See? Both ways give us 5 apples!
Let's Try With Stars!
4 + 1 = ?
Answer: 5
1 + 4 = ?
Answer: 5
Same answer again! It doesn't matter which number comes first!
Remember This!
You can flip the numbers and still get the same answer!