8th grade stupid math problem i cant figure out!! Grrrrrrrrrrrrr...?

Question

the directions say to use front end estimation and the answer is 91 but i cant figure out how to get that answer!! how do you solve this to get 91 as the answer what do you do? SOME ONE HELP!!

Your test scores are 100, 90, 82, 96, and 78. You have only one more test to take. After you complete the last test, what is your highest possible average?

Answer 1

If you've taken five tests already, the next one will make six. So to find the average after the next one, you will add your six scores and divide by 6. Therefore, you add 100+90+82+96+78, which equals 446. If you want the highest possible, you add 100 to make 546. 546/6=91

Answer 2

I don't know about "front end estimation," but here is one way to get the answer:

First, you know how to calculate your current average, right? --you take the given five scores, add them up, and divide by five: 100 + 90 + 82 + 96 + 78 = 446 / 5 = 89.2

You have one more test to take, so your final average score will be 100 + 90 + 82 + 96 + 78 + X / 6 --- you don't know X yet, but you do know that there will be six scores to average. Your *highest* possible average score will occur if you get 100 on the final test, right? If you plug in 100 for X above and do the arithmetic -- the answer is 91.

Answer 3

You have 5 test scores currently: 100, 90, 82, 96 and 78. These total 446, so you're average of these is 446/5 = 89.2.

Now with the final test you have to take, in order to determine the Highest possible score, you would have to get a 100 on the final test. So, let's add that to our total:

100 + 90 + 82 + 96 + 78 + 100 = 546.

You now have 6 test scores, so the average is 546/6 = 91

Answer 4

The maximum mark you can get for last test is 100
Therefore thehighestpossibleaverage = (100+90+82+96+78+100)/2 = 91

Answer 5

100 + 90 + 82 + 96 + 78 + another 100 then divid by 6 you get 91

Answer 6

The best you can do is score 100 on the last test, so you need to average 100, 90, 82, 96, 78 and 100.

Answer 7

I dont know what front end estimation is. But here is the simple way. Assuming that the highest score you can get is a 100, just put 100 in the list, and then find the average of the new list. (average---(100+90+82+96+78+100)/6).

Answer 8

The highest score you can get is actually 100.
Hence your average mark will be, should you get 100,
(100+90+82+96+78+100)/6=91

Answer 9

Suppose you scored 100 in the last paper. Now add all the paper's Mark =100(Guessing that this much you will score in last paper)+100+90+82+ 96+78 and the Sum will be 546. Then to take out the Avg we will devide this sum by 6 as there are 6 paper. I hope you got it.

Answer 10

If you figure the highest score you can receive on the last test you have to take is 100 then add the six numbers to get 546. Then divide 546 by 6 (the total amount of test scores). The answer comes out to 91.