What is the estimate and answer for 9- 3 7/8

Easy, round them into whole numbers,

change them into whole numbers:

9 --->9
and
3 7/8 can be changed into 4. ( 3 7/8 is almost 3 8/8 --->4)

9-4=5 

5 is your estimate.

Now,

9- 3 7/8

9 changes into 8 8/8 to be able to subtract

8 8/8
-
3 7/8

=

5 1/8

These are your answers. 5 and 5 1/8.

11 mintues is the naswer