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If I get 3 problems wrong on a 12 question math paper, what grade would I get?

User Grasevski
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If you think about it if you get 3 wrong then you would've got 9 right. so 9/12 is 75% You would've gotten a C. 
User Kaspnord
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6 votes

If you got 3 questions wrong on a 12 problem math paper, to figure out how many you got right you must subtract the number you got incorrect (3) from the total number (12).

12-3=9

To figure out your grade, you have to divide how many you got correct (9-see above) by the total number of questions (12).

9/12 = 0.75

If you multiply this decimal by 100, you get the equivalent percentage of 75%.

Therefore, you would have gotten a 75% on the paper.

Hope this helps!

User Mathlight
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