5409 +10 = 5419

5409 +100 = 6409

5409 +1= 5410

5409 +100 = 5509

5409 +1599 = 7008

5409 +1589 = 7098

5409 +2589= 7998

5409 +1590= 6999

Wow really awesome place value adding. I have a question for you. Have you ever thought about why it is important to use place value? Why do you think it's important that we keep numbers in their right spot?
-Mrs. Maley

Thank you!! No, I actually have never thought of that. I think it is important because if you don't you could be mixing up the number or adding, subtracting etc. it wrong. Also you might really need to know the answer.
-Adriana