Calculating a weighted average requires knowing what the weight assigned to each grade is. Each of these weights can be converted into decimals and added together they should equal 1. Next, each weight is multiplied by the grade received. All of these val

Calculate the sum of all the weighted values to arrive at your weighted average. Example: 7.5 + 15.2 + 16 + 44.1 = 82.8. The weighted average is 82.8%. Using the normal average where we calculate the sum and divide it by the number of variables, the avera

If a student had a 95 percent average on the tests, a 90 percent average on the quizzes and a 100 percent average on the homework assignments, the weighted percentage would be calculated as follows: "(95 x 0.5) + (90 x .3) + (100 x .2) = 47.5 + 27 +