Jack enters the grades he has received so far into the cells at left. In each row of cells, he enters a grade he received in the left cell and the amount that grade counts toward the final average in the right cell. For example, the rows

72 15
85 15
76 15

indicate that Jack's test grades are worth 15% each.

Note that Jack typed 15, not 15%, in the right column. Typing percent signs will confuse the program.

Also note that Jack did not convert the numbers to decimals; i.e. he did not type .15 in the cells to indicate a weight of 15%. Simply type 15 to indicate 15%.

The quizzes are slightly more difficult, but we can handle them. There are 10 quizzes, worth a total of 30% of the total grade. This means that each individual quiz is worth 30 divided by 10, or 3%, of the final grade. Therefore, Jack enters a 3 next to each quiz grade.

100 3
 90 3
100 3
100 3
100 3
 80 3
  0 3
 90 3
 70 3
 90 3

Note that Jack did not skip any rows when entering his grades; skipping rows can confuse the program. It's okay to have blank rows at the bottom.

Jack's school uses a plus-minus grading system.

In order to receive an A in the class, his final average must be at least 93, so he types

A 93

in the first row of cells. He needs a final average of at least 90 to get an A-, so he types

A- 90

in the next row. He repeats the process for B+, B, and so on.

Once again, note that Jack left the percents off; he typed 93, not 93%, for an A.

He also did not skip any rows, although blank rows at the bottom are OK.

Upon pressing , Jack sees the following in the box below:


Your current grades account for 75% of your final average. Your current average is 79. You need to make 135 in order to have an A average. You need to make 123 in order to have an A- average. You need to make 111 in order to have a B+ average. You need to make 95 in order to have a B average. You need to make 83 in order to have a B- average. You need to make 71 in order to have a C+ average. You need to make 55 in order to have a C average. You need to make 43 in order to have a C- average. You need to make 31 in order to have a D+ average. You need to make 15 in order to have a D average. You need to make 3 in order to have a D- average.

The Amazing Grade Calculator tells Jack that he has already received 75% of his total grade. This make sense, since his only remaining grade is the final exam, worth 25%.

So far, Jack's average is 79%, so he's currently sitting at the upper end of C+.

Next, the program tells Jack what he needs to make on the final to receive each possible letter grade. As you can see, Jack doesn't have a chance at anything above a B unless his teacher puts bonus questions on the final exam. On the other hand, Jack is almost guaranteed to pass the class; assuming D- is passing at Jack's school, Jack would have to make less than 3% on the final exam to fail!

You're now ready to go back to the Amazing Grade Calculator and compute your own grades! Best of luck to you in your studies!

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