March 19 homework.

Please finish these problems using the strategies taught in class. Do not use base10 or "the old way"! 

We need them in class tomorrow for a class discussion:

1. 429 + 387= 

2. 642 - 384=

3. 863 - 197=

4. 560 + 274=

5. 62 +  95 + 184 + 247=