Subtraction.

 
  7 5 6
- 2 3 5
       
  5 2 1
+ 2 3 5
 

1. Write the numbers so that the answer is the smallest.3-5-23-4.jpg (27748 bytes)

2. Subtract .Find the answer.
708 - 403        563 - 203          457 - 302
    205                       160                  55
    305                       260                155
    405                       360                255

8557 - 4501    5607 - 1603    5723 - 4321
    3556                  4214                 1502
    4056                  4004                 1444
    4056                  7214                 1402