I try to post grades every week, but sometimes I get behind. That is usually when you want to know your grade the most!
Here is what you do.
Lets say your grade was a C (75%) the last time I posted grades. Your point total was 375/500. Since the last posting where was a test. You got 90 out of 100 on that test.
last posted total on
point total + test +
------------------------------------------------------------------- x
100 = new %
last posted points possible
possible points + on test +
375 + 90
--------------- x 100 = 77.5%
500 + 100
If you have any other scores, continue to add the points earned to the top and the points possible to the bottom for as many assignments as you have.