Tutortonight

Demi

Literacy

A student has 100 net achievement points. Explain why a teacher taking of 4 behaviour points is equivalent to adding on 4 achievement points.

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egc2224 Is this a question you were given or are you trying to understand how your teacher grades?
Demi That's the one I was given
egc2224 sorry, not sure. maybe if you share a little about what your class has been discussing, it would help me understand what they are wanting you to understand and answer.
Demi So we have been doing fractions and how to times fractions with fraction and I don't know how to do the literacy because it doesn't make sense
egc2224 i think i understand. behavior points are a negative and achievement points are a positive change. so if a student had 84/100 and teacher gave them 4 behavior points they would have 80/100 after that. but if teacher changed mind and took them away it would be like subtracting a negative -(neg points), so would go back to 84/100 (80+4)/100. but if teacher didnt change mind and left at 80/100 but later student did something new good and got four achievement points it would also be 80+4 and go up to 84/100.
Demi So is 84/100 the answer
egc2224 no, number you start with doesn't matter. what matters is that -(-4) is same as +4 because both are divided by 100.
Demi So what will the answer be out of 84/100 or 80/100
egc2224 in your answer you could start with a grade like i did out of 80/100 and then do the same two calcs and compare and show you get same result fraction.
egc2224 neither 80/100 or 84/100 are the answer. what's important is that you start with a fraction grade #/100 and do the two calcs and show you get the same resulting fraction from both.
Demi So what will the answer be