Depends on the professor, but usually a B-
The grade speaks for itself. If you mean a letter grade, that would depend on the grade-scale which would depend on how hard the test or exercise was. In my grade school that score would have been a "C'. In my college classes, a "B".
44% would normally be a grade of 'F'
38% would be an F. If you got 38 out of 60 answers correct your grade would be 63% or letter grade D or F, depending on your grading scale.
It would be letter grade of A, or a numerical grade of 4.0.
A 2.56 would be a letter grade of C+ for institutions that grade on a plus system.
51% would be a an 'E' or 'F'
that would be a solid B
On most scales, that would be a B-.
For most schools that would be considered an F.
That would be a 69.76 percent, and what letter grade that percentage figures into will depend on your school's system. On the "typical" scale, that would be a D.
Usually they kick you out of the college for that low of a grade. Expect a letter.
On a 4.0 scale with 4.0 being the highest, a GPA of 3.179 would be a letter grade of B.