Calculating Grades - NEW ASSIGNMENT AFTER THIS WEEK'S QUIZ

The quiz grades were pretty good! On average, they were better than last time, which for most of you will bring up your average in the "quiz" category in the grade book.

Speaking of grades ... That's what we're doing next. It's pages 17, 18, and 18A in your packet. Please come prepared to go over that in class next time.

If you don't have those pages, here they are:

Here's another example, from my actual grade categories for this class:

Assessments (tests and major projects) : 60%  <<< These are the CATEGORY WEIGHTS
Daily assignments and quizzes: 20%
Final exam: 20%

To calculate a student's grade, (1) multiply their grade in each category by that category's weight, as a DECIMAL, then (2) add them all up.

So if a student has a 70 average on daily grades and quizzes, but an 80 average on tests, and they get a 78 on the final, their grade will be:

70*.60 = 42
80*.20 = 16
78*.20 = 15.6
+ __________
                73.6, which would round to a 74.

If a student has a 75 average on daily and quizzes, and a 78 average on tests, what do they need to get on the final to get a B?

75*.60 = 45
78*.20 = 15.6
[x]*.20 = 0.20X
+____________
              60.6 + 0.20X = 80 (a B)    <<< now we solve for X, the final exam grade needed.
             -60.6                  -60.6
___________________________
                         0.20X = 19.6
                              /0.2           /0.20

                              X = 98.
The student would need to get a 98 on the final exam to get a B for the class.