Using addition properties
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Using Addition Properties. You know that you can use addition properties to help you add. Let’s try!. What should you do before you add?. 3,418 + 85 + 452. Line up the digits!. What do you do first?. 1. 3,418 85 + 452 5. Add the ones!.

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Using Addition Properties

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Using addition properties

Using Addition Properties

You know that you can use addition properties to help you add.

Let’s try!


Using addition properties

What should you do before you add?

3,418 + 85 + 452

Line up the digits!


Using addition properties

What do you do first?

1

3,418

85

+ 452

5

Add the ones!


Using addition properties

Did you use the associative property when adding the ones?

1

3,418

85

+ 452

5

10

+ 5 = 15

Look for a ten; add 8 + 2, then add the 5.


Using addition properties

Did you need to regroup?

1

3,418

85

452

5

Yes!


Using addition properties

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.


Using addition properties

Now you try one on your slate.

1 1 2

23,384

8,593

+ 452

32,429


Using addition properties

Let’s try another one.

1

$142.09

+ 7.23

$149.32


Using addition properties

One more?

1 1

3,067

+ 2,693

5,760


Using addition properties

Well Done!


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