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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!. 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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  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? 3,418 + 85 + 452 Line up the digits!

  3. What do you do first? 1 3,418 85 + 452 5 Add the ones!

  4. 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.

  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. 1 1 2 23,384 8,593 + 452 32,429

  8. Let’s try another one. 1 $142.09 + 7.23 $149.32

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

  10. Well Done!

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