Hey there! Sign in to join this conversationNew here? Join for free
    • Thread Starter
    Offline

    3
    ReputationRep:
    this topic really confuses me and it seems to be the only one i am struggling with right now
    4.50 if rounded to 2dp, would the upper bound be 4.505 and the lower bound be 4.495?
    80mm rounded to 1sf, would the upper bound be 85mm and the lower bound be 75mm?
    thanks in advance
    Offline

    22
    ReputationRep:
    (Original post by neharajput)
    this topic really confuses me and it seems to be the only one i am struggling with right now
    4.50 if rounded to 2dp, would the upper bound be 4.505 and the lower bound be 4.495?
    80mm rounded to 1sf, would the upper bound be 85mm and the lower bound be 75mm?
    thanks in advance
    A good way to think of this is to think about what does "rounded" mean?

    If 4.50 is a number has been rounded that means the original number could be anywhere between 4.495 and 4.505 as any number between those two would be rounded to 4.5.

    So 4.496 would get rounded to 4.50, 4.504 would get rounded to 4.50, etc...

    So yes, 4.50 rounded to 2 d.p has a lower bound of 4.495 and an upper bound for 4.505.

    By that logic, does your answer to the second question work? (it does)

    Also, you're not the only one struggling, I've seen at least three/four different posts about this topic in the last few days.
 
 
 
  • See more of what you like on The Student Room

    You can personalise what you see on TSR. Tell us a little about yourself to get started.

  • Poll
    Are unpaid trial work shifts fair?
    Useful resources

    Make your revision easier

    Maths

    Maths Forum posting guidelines

    Not sure where to post? Read the updated guidelines here

    Equations

    How to use LaTex

    Writing equations the easy way

    Student revising

    Study habits of A* students

    Top tips from students who have already aced their exams

    Study Planner

    Create your own Study Planner

    Never miss a deadline again

    Polling station sign

    Thinking about a maths degree?

    Chat with other maths applicants

    Can you help? Study help unanswered threads

    Groups associated with this forum:

    View associated groups
  • See more of what you like on The Student Room

    You can personalise what you see on TSR. Tell us a little about yourself to get started.

  • The Student Room, Get Revising and Marked by Teachers are trading names of The Student Room Group Ltd.

    Register Number: 04666380 (England and Wales), VAT No. 806 8067 22 Registered Office: International House, Queens Road, Brighton, BN1 3XE

    Quick reply
    Reputation gems: You get these gems as you gain rep from other members for making good contributions and giving helpful advice.