1. what is 10000 less than 61397?

2. what is 10000 more than 87406?

3. what is 1000 less than 46377?

4. what is 82126 more than 100?

5. what 10535 less than 10000?

6. 79459 ______ less than 79460?

7. 77602 ______ more than 77592?

8. 52341 ______ more than 51341?
(please help me with this)