Dynamic memory partitions? Best fit, worst fit, first fit?

Can you correct my answer if it is wrong?

If the partitions are dynamic and a new job arrives requiring 52 blocks of main memory, show memory after using each of the following partition selection approaches

The initial state of memory is:

Operating System

Process 1

Empty 60 blocks

Process 2

Process 3

Empty 52 blocks

Empty 100 blocks

My answer:

First fit:

Operating system

Process 1

New 52 block process

Process 2

Process 3

Empty 8 blocks

Empty 52 blocks

Empty 100 blocks

Best fit:

Operating system

Process 1

Process 2

Process 3

New 52 block process

Empty 60 blocks

Empty 100 blocks

Worst fit:

Operating system

Process 1

Process 2

Process 3

New 52 block process

Empty 52 blocks

Empty 60 blocks

Empty 48 blocks