Hi, My name is Richard and I'm an eighth grade history teacher. My question is this. I'm using a grading program for the first time this year. (ok, that's not a question) I require my students to record their grades in a Scorekeeper when they get them back. I'd like to know if my students can keep up with averaging their grades just as the grading programs automatically averages them when I put them in the spreadsheet. For example, I have one student who has ten homework grades that averages out to a 51 (homework average counts 20%). I have four quiz grades that average out to be a 68 (quiz average counts 10%). And 3 major tests that average out to a 98 (test average counts 20%). There will be other grades coming in at a later time that will eventually total 100%. The grading program calculates that out to be a 73. My question is, how did the program calculate that average when I don't have all of my grades in at that time? And is there a non stressful way I and my students can calculate that same answer? Thanks a lot for your help:) Sincerely, Richard Hi Richard, As stated your student has (according to the program) 51% of 20 marks ( 51/100 20 = 10.2); 68% of 10 marks ( 68/100 10 = 6.8); and 98% of 20 marks ( 98/100 20 = 19.6), i.e., the student has 10.2 + 6.8 + 19.6 = 36.6 marks out of the possible 20 + 10 + 20 = 50 marks so far. 36.6 out of 50 is 73.3%. So, the program calculates that the student has received 73% of the marks available so far. Penny and Claude Go to Math Central To return to the previous page use your browser's back button.