Assign a letter grade to whole numbers: 4.0 = A, 3.0 = B, 2.0 = C, 1.0 = D, and 0 = F.
Assign numerical grades for all plus (+) grades. B+, C+, and D+ will each be 0.4 points above the whole number grades. The breakdown for each of these grades will be as follows: B+ = 3.4, C+ = 2.4 and D+ = 1.4.
Assign numerical grades for the remaining minus (-) grades. B-, C-, and D- will each be 0.3 points below the whole number grades. The breakdown for each of these grades will be as follows: A- = 3.7, B- = 2.7, C- = 1.7 and D- = 0.7.