1. Using Addition Properties
You know that you can use addition properties to help you add.
Let’s try!

2. What should you do before you add?3,
Line up the digits!

3. What do you do first? 1
3,418 85 5
Add the ones!

4. Did you use the associative property when adding the ones?1
3,418 85 5 10
+ 5 = 15
Look for a ten; add 8 + 2, then add the 5.

5. Did you need to regroup? 1
3,418 85
452 5
Yes!

6. What are the next steps to finding the sum?1 1
3,418 85
452
3,955
Add the tens;
regroup;
add the hundreds,
add the thousands.

7. Now you try one on your slate.
23,384
8,593
32,429

8. Let’s try another one. 1
$142.09
$149.32

9. One more?
1 1
3,067
+ 2,693
5,760

10. Well Done!