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Positives and Negatives!

October26

Safari001

Don’t forget to explain how you know the answer choice you chose is the correct solution!

by posted under Math 7, Math 7/8, maths, SBAC | 124 Comments »    
124 Comments to

“Positives and Negatives!”

  1. October 27th, 2014 at 8:44 am      Reply jessicad2014 Says:

    d is the correct answer because it say what is 11/2+1/2=d
    how i know the answer is correct


    • October 28th, 2014 at 8:24 am      Reply jessicad2014 Says:

      D is the correct answer because it is 11\2+1\2=how i know the answer is correct i tried all the other ones and they did not fit the problem

      ms.Ellison i m not sure i think did it right


  2. October 27th, 2014 at 11:16 am      Reply dustinr2014 Says:

    the answer i got was d because we went from zero to a positive 1 1/2 and then we went to the left 1/2 on the number line.

    dustinr from 5th p


  3. October 27th, 2014 at 11:49 am      Reply alexsisb2014 Says:

    The correct answer would be D. It would be D because you started with a positive so it would go right.since you are adding a negative you have to cancel so that would mean it would go left.In D it shows 1 1/2 going to the right and – 1/2 going to the left.


  4. October 27th, 2014 at 2:51 pm      Reply kennedym2014 Says:

    D. is the answer because you add the 1 1\2 then you have to take away a 1\2 because you add a – number so that’s like taking away 1\2.


  5. October 27th, 2014 at 3:05 pm      Reply haileyb2014 Says:

    The correct answer is letter D. I got this by looking at the first number (1 1/2) and thinking, where would this number be on the number line, and what direction is the arrow facing? Then I found the two letters who had the answer I did, which was letter A and D. Then I went and looked at the second number (1/2) and thought (again) where would this number be on the number line, and which way would it be facing? Once I found my answer I looked at A and D because those are the only two that had the first number right, and saw that D had 1/2in the right spot and facing the right way.


  6. October 27th, 2014 at 4:10 pm      Reply madisono2014 Says:

    The correct answer is D because it is positive 1 and a half then the next number is -half so when you add those two together you will have less than you started with so the correct number line is D because the answer is 1.


  7. October 27th, 2014 at 4:22 pm      Reply rachelre2014 Says:

    the answer i choose was line d because it is 11/2 +-1/2 so when you add those two together you will have less than what you started with and the only line that shows that is line d that is my answer


  8. October 27th, 2014 at 7:10 pm      Reply emmabr2014 Says:

    OBVIOUSLY, the answer is D. ok, so the problem says “which number line model represents the sum of 1 1/2 + 1/2” so if you look at all the number lines they all say a different answer other than D. Such as:
    2
    -2
    -1
    If you pay attention to what the problem says it says the sum of 1 1/2 and -1/2. the -1/2 means that if the number is negative you go backwards, if the number is positive you keep going forward. So, that means that all the answers A through C are wrong. D would be the correct answer because you are adding 1 1/2 on the number line and then you are subtracting -1/2 on the number line so since 1/2 is negative you would be going backwards on the number line and then your end product would be one. that is your correct answer.


  9. October 28th, 2014 at 8:34 am      Reply adriannap2014 Says:

    The answer would be (B) because 1 1/2 + (- 1/2) is 1 2/4 ..


  10. October 28th, 2014 at 11:51 am      Reply cameronj2014 Says:

    D because thearows are different


  11. October 28th, 2014 at 1:55 pm      Reply alesham2014 Says:

    i think that c is your anwer because when u have 1 1/2 and -1/2 u are looking for how far away they are form echothe to get a answer on th number line.


  12. October 28th, 2014 at 1:55 pm      Reply saulr2014 Says:

    i think the answer is B becasue in one the a negative and aonly a B theres a negative fraction so my answer is B


  13. October 28th, 2014 at 3:05 pm      Reply julianac2014 Says:

    The correct answer is D. Since you are doing positive 1 1/2 and adding negative 1/2, it would be the same as doing 1 1/2- 1/2. D shows that the first line starts at zero, and goes halfway between 1 and 2. That is 1 1/2. The second line starts halfway between 1 and 2 and goes to 1. That is 1/2. Since the 1/2 line is facing the opposite direction from 1 1/2, you would subtract. That means that the problem would be 1 1/2-(-1/2), or 1 1/2 + (-1/2).


  14. October 28th, 2014 at 3:20 pm      Reply brandonw2014 Says:

    the answer is d because it go’s to 1.5 then go’s back to 1. and the sum of 1.5+-.5 is 1.


  15. October 28th, 2014 at 3:37 pm      Reply Brandonm2014 Says:

    The answer is c because the answer is one I know a is also going the same way but both arrows are going the same way when only one of the two arrows have to go toward the negative side.that is why the answer is c


  16. October 28th, 2014 at 3:52 pm      Reply zacharyde2014 Says:

    i think that the answer is d because the arrow opining left to right is 1 1/2 and the one pointing right to left is -1/2


  17. October 28th, 2014 at 5:01 pm      Reply allysonb2014 Says:

    the number line that represents the sum of 1 1/2 and -1/2 would be number line D because that line shows 1 1/2 and it shows it subtracting 1/2 so then that means that is the correct number line


  18. October 28th, 2014 at 5:26 pm      Reply alyssaj2014 Says:

    It is D because you r are going to the right for positives then your going to the left for negatives.


  19. October 29th, 2014 at 8:15 am      Reply marial2014 Says:

    the answer is D i got this answer because you have to move rom the zero and go 1 1/2 to the right and then go -1/2 to the left and that is how you get your answer.


  20. October 29th, 2014 at 8:17 am      Reply zacharya2014 Says:

    i know the answer is D because 1 1/2 + (-1/2) so the half will just be gone because a half subtact a half is nothing so that wil just leave you with 1 hole.


  21. October 29th, 2014 at 8:18 am      Reply onterioj2014 Says:

    sorry wrong one i think its d because the big hand gives you 1/2 and the little hand gives you 1


    • November 2nd, 2014 at 7:55 am      Reply ajellison Says:

      Thanks Onterio! Can you explain what you mean by “the big hand gives you 1/2 and the little hand gives you 1”?


  22. October 29th, 2014 at 8:23 am      Reply jimenai2014 Says:

    I Got D.
    I got this by starting at 0 and moving ethier right or left depending on the number if its negitive or positive,and i tryed it on all and it would not fit good until i got to the very last one and it fit perfectly so i thought it has to be that one.
    🙂


  23. October 29th, 2014 at 8:24 am      Reply alexam2014 Says:

    I got D becuas you move to the to the right for 1 1/2 and you move left for the 1/2


  24. October 29th, 2014 at 8:25 am      Reply nataliam2014 Says:

    The letter D is the best answer because the arrow goes one whole, and a half, ( 1 1/2), as i had to take away a half, so the small arrow goes backwards of a half.
    thats why i think letter D represents the sum.


  25. October 29th, 2014 at 1:50 pm      Reply keltons2014 Says:

    It D because you have more positivie then negative so you would get 1 and D show it.do 1 1/2 – 1/2 and get 1.


  26. October 29th, 2014 at 2:36 pm      Reply benjamind2014 Says:

    The answer is D. If you have 1 and you add -1/2 then it’s just like subtracting.


  27. October 29th, 2014 at 2:53 pm      Reply treya2014 Says:

    the answer is d because the answer to 1 1/2 + -1/2 is one so you have to pick the number line which starts on 1 1/2 and shows that the number is less and the other shows that the number is more than zero. D is the only one that shows this.


  28. October 29th, 2014 at 3:05 pm      Reply Jason Bietz Says:

    the line that reprecents the sum of 1 1/2+-1/2 is D because 1 and a half – half=1


  29. October 29th, 2014 at 3:40 pm      Reply chasen2014 Says:

    D. Because the problem is basically saying 1.5-0.5


  30. October 29th, 2014 at 5:00 pm      Reply michelleca2014 Says:

    I think that the answer is c. Because the 1 1 2 is on the positive side. And the negative 1 2 is on the negative side


  31. October 29th, 2014 at 5:31 pm      Reply alexaz2014 Says:

    I think c is the right answer becase the first one is that a posative and It gose right and the other one is negative so you have to go left


  32. October 29th, 2014 at 6:25 pm      Reply danield2014 Says:

    The line graph model (d) is the correct answer because one line goes to the right past 1 and lands at the halfway point, which equals to positive 1 1/2 then an other line goes to the left for half point, which equals – 1/2. So, the result is 1


  33. October 29th, 2014 at 6:42 pm      Reply jeanettem2014 Says:

    D would be the correct answer because you have one and a half and you add a negative half and that is going a half step back since you are adding a negative, you added that negative so it would be the same thing as subtracting , also if you drew that ,there would be one zero pair so since you took away that zero pair it leaves you with a smaller number and that number is 1 so the answer is one


  34. October 29th, 2014 at 7:03 pm      Reply turiea2014 Says:

    miss Ellison my answer is D because you start with a positive as it starts with a positive and goes BACK 1 1/2 so yea and bruhh I love you


  35. October 29th, 2014 at 7:05 pm      Reply Lisbethfernando Says:

    my answer for this problem is (d) because in the problem says it shows it in the problem there are so meany problems but that is the correct answer.


  36. October 29th, 2014 at 7:10 pm      Reply jasminb2014 Says:

    D is the correct answer because adding a negative is really just subtracting so i would go 1/2 to the left of the number line.


  37. October 29th, 2014 at 7:46 pm      Reply jaquelinev2014 Says:

    The answer is d.First on your number line you draw an arrow to the right of 0 and you draw the arrow to 1 1/2 then you have to draw -1/2 because that’s what your taking away so your arrow starts at 1 1/2 and End at 1because 11/2+-1/2 equals1 so the answer is d.


  38. October 29th, 2014 at 8:23 pm      Reply audram2014 Says:

    the answer would be D. The reason for this is when you take 1 1/2 + (1/2) that would be one and line that number D represents that perfectly.


  39. October 29th, 2014 at 9:18 pm      Reply kateenaa2014 Says:

    I think answer D is correct. I know this because 1 1/2 + -1/2 equals 1.Since your answer is positive the solution can’t be B or C. So out of A and D, answer D is more accurate.


    • November 2nd, 2014 at 7:42 am      Reply ajellison Says:

      Thanks Kateena! I like how you used elimination as a strategy to solve this problem! What made you choose D instead of A?


  40. October 29th, 2014 at 10:30 pm      Reply Tristin weber Says:

    Do is the correct answer because 1.5 goes up and-.5 goes down.


  41. October 29th, 2014 at 10:40 pm      Reply Tristin weber Says:

    D is the correct answer because 1.5 goes up and -.5 goes down


  42. October 30th, 2014 at 7:42 am      Reply natalied2014 Says:

    i chose answer D because if you add 1 1/2 and subtract 1/2 then your done.


  43. October 30th, 2014 at 7:44 am      Reply seans2014 Says:

    i picked D because i think that the (-) is a subtract symbol…and that you subtract 1/2 and thats what i got D.

    IF ITS WRONG DONT PUT IT UP 😛


  44. October 30th, 2014 at 7:51 am      Reply cameronj2014 Says:

    D.) because when you add you have to change the addtion sign to a subtraction sign. when i subtracted, one and a half by negative one and a half i got 0.


  45. October 30th, 2014 at 3:14 pm      Reply teah2014 Says:

    the answer is D because the 11/2 is positive so the arrow for that should be going up, since of course it’s positive. The second arrow should be going down because the 1/2 is negative, soooo with that, the answer is D.


  46. October 30th, 2014 at 3:43 pm      Reply jasminm2014 Says:

    I think the correct answer is “d” because you start at one and a half then you subtract half even though it says to add. You subtract because the half is a negative number.
    GO GIANTS!


  47. October 30th, 2014 at 4:29 pm      Reply jiannav2014 Says:

    The answer is D because the first number is 1 1/2 and the bottom arrow is at 1 1/2 (between 1 and 2) . The second number is 1\2 and the top arrow is 1/2 long. Because we are adding a negative number, we need to subtract (go to the left) and the top arrow is pointing to the left. The answer to the problem is 1.


  48. October 30th, 2014 at 7:54 pm      Reply susanat2014 Says:

    I think that the correct answer is D because the problem asks which number line model represents the sum of 1 1/2+(-1/2). D is correct bacause it shows us that there is 1 1/2 or 1.5 with the arrow pointing left which means its adding but then it asks us to subtract 1/2 or .5 and that arrow is pointing to the right. If we were looking for the answer it would be 1.


  49. October 30th, 2014 at 8:03 pm      Reply anastias2014 Says:

    The answer for this blog is letter D because you always have to start at 0. Next you go back half and so model D would show the example!


  50. October 30th, 2014 at 8:46 pm      Reply Anonymous Says:

    A because if you use logic 1 1/2 + 1/2 is obviously 1


  51. October 30th, 2014 at 8:53 pm      Reply Katiesa2014 Says:

    My answer is (D) because you have to start off at positive 1 1/2 which is on the right of the number line. After that you have to subtract 1/2 because adding a negative is the same as subtracting a positive. So 1 1/2 + (-1/2) = 1. And that’s what the answer (D) says.


  52. October 30th, 2014 at 9:16 pm      Reply dayneo2014 Says:

    The correct answer is d. This is because line d shows it going up 1 and a half, then going back 1 half. So the answer is + 1


  53. October 30th, 2014 at 11:07 pm      Reply angeli2014 Says:

    The answer would be D because i am adding 1 1/2 + -1/2 so i would go up the number line and draw a arrow going to 1 1/2 and then from 1 1/2 i would go down the number line and draw an arrow from 1 1/2 down to 1 because i’m subtracting 1/2 because its a negative so i would bring it down so technically i’m subtracting. That is why the answer would be D !!!


  54. October 31st, 2014 at 5:03 pm      Reply elianov2014 Says:

    Answer is B


  55. October 31st, 2014 at 5:49 pm      Reply graciea2014 Says:

    My answer is d
    D is the answer because the arrow is going to 1 1/2 on the right of the 0 and the arrow on top of the one going to the right is the arrow going 1/2 to the left of the number line. Since the equation is 1 1/2+(-1/2), d makes the most sense because on the number line is going up to 1 1/2 and going down 1/2 since you are adding -1/2 your really subtracting 1/2.


  56. November 1st, 2014 at 12:21 am      Reply citlallym2014 Says:

    None of these number lines show the correct answer. The correct answer is 0. I know this because if you add a positive and a negative you are making zero pairs and your leftovers are your answer but the equation, 1 1/2 + -1 1/2 has all zero pairs and no leftovers. None of the number lines above show zero as an answer.


    • November 2nd, 2014 at 7:29 am      Reply ajellison Says:

      Good start Citlally! Your logic is correct but your problem is incorrect. Make sure you read the question very carefully and that you are working on the intended problem!


  57. November 1st, 2014 at 12:56 am      Reply ericv2014 Says:

    I would pick A because when i did the math I got 4/4 witch equals 1 whole. And 11/2 is bigger than -1/2.


    • November 2nd, 2014 at 7:28 am      Reply ajellison Says:

      Thanks Eric! Do the arrows on the number line tell you anything about the numbers? Did you use them to arrive at your solution?


  58. November 1st, 2014 at 9:23 am      Reply josiasp2014 Says:

    D is the correct answer because the line on the top of D ends at 1 1/2 and then it adds a negative, so basically 1 1/2 minus 1/2 is 1, and the line ends at one.


    • November 2nd, 2014 at 7:26 am      Reply ajellison Says:

      Good start Josias! How do you know if the the arrows are representing the positive or the negative numbers?


  59. November 1st, 2014 at 11:44 am      Reply kevina2014 Says:

    I think the answer would be D because first of all first they are graphing 1 1/2 and its graphing 1 1/2 from 0 to 1 1/2 and since it positive its going to the right. They also graphed -1/2 putting the arrow from 1 to 1 1/2 so it would be 1/2 and the arrow is pointing to the left because it is negative.


  60. November 1st, 2014 at 12:22 pm      Reply jaydinw2014 Says:

    A. because you do the math and you would get that answer or I did


    • November 2nd, 2014 at 7:24 am      Reply ajellison Says:

      Jaydin,
      This does not tell me what your answer is OR how you arrived at your solution. Please read over your comments and make sure they are clear and complete.


  61. November 1st, 2014 at 4:31 pm      Reply katarinam2014 Says:

    D IS the right answer because the long arrow starts at 0 and goes to the right for 1 1/2 in the positive direction and the small arrow goes 1/2 to the left which represents -1/2.


  62. November 1st, 2014 at 5:08 pm      Reply bernicek2014 Says:

    i think the answer is d because the 1 1/2 is positive and the arrow is going right to the positive number. the second number is -1/2 and its negative so it would have to be going to the left and it is. so thats why i think its d.


  63. November 1st, 2014 at 5:08 pm      Reply bernicek2014 Says:

    i think the answer is d because the 1 1/2 is positive and the arrow is going right to the positive number. the second number is -1/2 and its negative so it would have to be going to the left and it is.


  64. November 2nd, 2014 at 9:01 am      Reply maleal2014 Says:

    The answer I got was D. I tried solving all the other solutions but D came out to be the only one that was right.


  65. November 2nd, 2014 at 3:13 pm      Reply maisy depetro Says:

    D is the correct answer because the long arrow starts at 0 then goes to 1 1/2 and the short arrow goes to the left which would equal -1 1/2. which would make the correct answer D.


  66. November 2nd, 2014 at 3:17 pm      Reply maisyd2014 Says:

    the correct answer is D because the big arrow starts at 0 and goes to the right which would equal 1 1/2. and the small arrow starts at 0 and goes to the left which would equal -1/2. and thats why i think the correct answer is D.


  67. November 2nd, 2014 at 3:33 pm      Reply dylann2014 Says:

    D I got this answer because 1 1/2 is positive and the the large arrow is going to the right of the zero and _ 1/2 is negative and the small arrow is going to the left of the zero


  68. November 2nd, 2014 at 3:55 pm      Reply rheond2014 Says:

    The correct answer is d because on the graph it shows 1 1/2 and then the plot shows the small arrow going back 1/2 to indicate the number is being subtracted.


  69. November 2nd, 2014 at 6:15 pm      Reply sydneyb2014 Says:

    D because you pretty much minus 1/2 from 1 1/2 . So the arrow points at the end answer


  70. November 3rd, 2014 at 4:54 pm      Reply montserrathg2014 Says:

    I think the answer would be D because 1 1/2 is a positive number and it is going to the positive way, -1/2 is negative and its going to the negative way.


  71. November 3rd, 2014 at 4:55 pm      Reply montserrathg2014 Says:

    And in -1/2 is on 1/2 and going to the negative sign.


  72. November 4th, 2014 at 10:29 am      Reply colev2014 Says:

    The anwser is D


  73. November 4th, 2014 at 5:46 pm      Reply fanel2014 Says:

    (D) because + 1 1/2 goes to the right and then – 1/2 goes to the left… so your adding 1 1/12 to 0 and subtracting 1/2 from 1 1/2


  74. November 5th, 2014 at 6:25 pm      Reply rogeliop2014 Says:

    the answer would be (B) cause 1 1/2 plus ( -1/20 is 2/4


  75. November 6th, 2014 at 4:20 pm      Reply jordynd2014 Says:

    the correct answer is d because the 1 and a half the number next to it if you add the half you will less then what you have started with.


  76. November 6th, 2014 at 4:53 pm      Reply teresam2014 Says:

    The answer is D. The reason why is, you subtract so you went back on the number line one half of one, the subtraction and addition sign makes a subtraction sign.


  77. November 6th, 2014 at 6:04 pm      Reply Mason.M Says:

    i think D is the correct anwser because 1 1/2 + -1/2 equals1 and since your anwser is positive the solution cant be B or C . so out of anwsers A and D, D would be more accurate.


  78. November 6th, 2014 at 6:18 pm      Reply samanthabo2014 Says:

    Positives + Negatives

    The right answer is D because the longest arrow correctly shows 1- 1/2, and a positive plus a negative is a negative, so your basically subtracting 1/2 off 1 1/2, which the shortest arrow correctly shows it’self subtracting half.

    Samantha B.


  79. November 7th, 2014 at 1:31 pm      Reply anneh2014 Says:

    D is the correct anser becuase you have to change the fraction into a decimal and the anser d has the correct anser!


  80. November 7th, 2014 at 1:35 pm      Reply Consuelo Says:

    Miss Ellsion the answer is D because the 1 1/2 is positive and the arrow is going right to the positive number. The second number is -1/2 and its negative so it would have to be going to the left and it is soo the answer is D. =)=)=)=)=)=)=)=)=)


  81. November 7th, 2014 at 5:22 pm      Reply rainf2014 Says:

    I think the answer is D because 1 1/2 is positive so the answer is going right to the positive side.


  82. November 10th, 2014 at 1:29 pm      Reply jadalynnv2014 Says:

    i think the answer is going to be B because when the arrows are crossed like that then it is correct.


  83. November 11th, 2014 at 12:26 pm      Reply julianm2014 Says:

    The answer is c because first you go right to 1.5 then subtract .5 to get 1. The answer is also not d because you go right first, so the 1.5 is on top


  84. November 11th, 2014 at 4:24 pm      Reply ashleight2014 Says:

    the correct answer is D. because if its 1 and 1 in an half plus (-1 in an half) you start from 0 and go to 1 and 1 in an half and ( – !!!) and go a half back because you turn the negative into minus.


  85. November 12th, 2014 at 11:31 am      Reply stephaneg2014 Says:

    D is the correct answer because 1 1/2 +1/2 =D


  86. November 16th, 2014 at 11:38 am      Reply reneeh2014 Says:

    The correct answer is D. Positive 1 1/2 + negative 1/2 is the same thing as doing 1 1/2 – 1/2 , and D shows that the long arrow starts at 0 and goes to the right for 1 1/2 in the positive direction and the small arrow goes 1/2 to the left which represents -1/2.


  87. November 18th, 2014 at 7:46 am      Reply alexanderz2014 Says:

    The answer is D because if you use “Same-Change-Change” the
    answer will be 1. So if you do use “SCC” the problem would be
    written like this: 1 1/2+ (-1/2)= 1 1/2 – 1/2.
    DONE!!!!!!!!!
    Point Prooven!?


  88. November 18th, 2014 at 4:41 pm      Reply landonc2014 Says:

    d because your gong right for the positives and left for negitives


  89. November 21st, 2014 at 8:33 am      Reply alexsandrak2014 Says:

    d is correct because if you add 1 1/2 to 1/2 you are done


  90. November 21st, 2014 at 9:03 pm      Reply skylarr2014 Says:

    The answer I got was D. I tried solving all the other solutions but D came out to be the only one that was right.


  91. November 23rd, 2014 at 7:32 pm      Reply cierrag2014 Says:

    the answer is D, because the line for 1 1/2 is correct and if you add (-1/2) then the line would go back towards the negative area.


  92. November 29th, 2014 at 5:52 pm      Reply lizbethv2014 Says:

    D is the correct answer because the number line has arrows on top of it an the first in represents1 1/2 and the second one represents (-1/2)


  93. November 30th, 2014 at 5:03 pm      Reply kaedenh2014 Says:

    The first thing that I did was that I started at zero. I then added 1½ so I’m going to the right on the number line. The next thing that I did was that I added the negative ½ which means that I move ½ to the left on the number line. So my answer is D.


  94. December 1st, 2014 at 8:20 am      Reply anasm2014 Says:

    i think D is the correct answer because on the number line there is two arrows above and the the bigger arrow shows it pointing to 1/2 and the smaller arrow is pointing to the (-1/2) thats why i think D is the answer.


  95. December 10th, 2014 at 5:59 pm      Reply natalied2014 Says:

    The answer is d because it goes up 1 1/2 and back 1/2 so it gives the correct answer.


  96. December 16th, 2014 at 7:33 pm      Reply harrisonw2014 Says:

    D because you start at zero and 1 1/2, then you take away 1/2 and it leaves you with 1.


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