Tuesday, January 10, 2012

Maths Challenging Sums (2)

Date your work.
Title: Challenging Sums (2)
Calculators allowed


1. Mei Shan bought 69 kg of sugar. She packed an equal amount of sugar into 8 bags and had 4 kg of sugar left. What is the mass of sugar in each bag? Express your answer as a decimal correct to 1 decimal place. (3m)

2. A container holding liquid X weighs 4.95 kg altogether. The same container holding liquid Y
weighs 8.95 kg altogether. Liquid Y weighs twice as heavy as liquid X. Find the weight of the
empty container. (4m)

3. The total mass of 2 bags of rice and a packet of sugar is 12.25 kg.  The total mass of a bag of rice and 2 packets of sugar is 8 kg.  What is the mass of a packet of sugar? (4m)
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25 comments:

  1. StanleyJanuary 10, 2012 at 3:12 PM

    Oh jesus

    ReplyDelete
  2. maxJanuary 10, 2012 at 3:20 PM

    yea

    ReplyDelete
  3. MaxJanuary 10, 2012 at 3:23 PM

    i started at 3.05
    its 10 mins after Mdm Toh written down everything....
    zzzzzzz

    ReplyDelete
  4. MaxJanuary 10, 2012 at 3:25 PM

    anyone online?
    i got time to chat
    if no one is,i will go to sleep..
    zzzzzz.zzzzzzz.zzzzzzzz.
    haha

    ReplyDelete
  5. MaxJanuary 10, 2012 at 3:27 PM

    so bored...
    can't do anyting...

    ReplyDelete
  6. SherleneJanuary 10, 2012 at 3:27 PM

    wow that is fast

    ReplyDelete
  7. MaxJanuary 10, 2012 at 3:30 PM

    Oh yes!
    1 more thing..
    Mdm Toh,why Question 4's letters are bigger than the other questions?

    ReplyDelete
  8. MaxJanuary 10, 2012 at 3:31 PM

    bored..

    ReplyDelete
  9. MAxJanuary 10, 2012 at 3:35 PM

    i better watch the TV.
    see got any show or not.....
    oh yes there is!!!!!
    i got to go!

    ReplyDelete
  10. StanleyJanuary 10, 2012 at 3:35 PM

    o__O max ur counted as spamming u know
    if u wanna make this a chat box den EVEN MORE SPAM LIKE o__O

    ReplyDelete
  11. StanleyJanuary 10, 2012 at 3:43 PM

    Errrr Mdm. Toh i'm asking this for everyone else can we use the calculator?

    ReplyDelete
  12. shihuiJanuary 10, 2012 at 4:08 PM

    hi

    ReplyDelete
  13. shihuiJanuary 10, 2012 at 4:12 PM

    can we use caulator or can't?
    i got too many homework from tuition
    the chinese spelling is very hard
    need to remember two sentences >_<
    by the way
    i don't have the writting journal
    you guys have it?
    or is it that Mdm Toh kept for us?
    :)

    ReplyDelete
  14. ernestJanuary 10, 2012 at 4:49 PM

    i now then check so no time to do later i come back from tuition at 8.45 pm then do

    ReplyDelete
  15. ernestJanuary 10, 2012 at 4:50 PM

    :( i still got alot of work to do

    ReplyDelete
  16. JessieJanuary 10, 2012 at 8:43 PM

    How to do Q2 and Q3?

    ReplyDelete
  17. Wei TingJanuary 10, 2012 at 8:55 PM

    Max : There's no question 4 is there ?

    ReplyDelete
  18. JessieJanuary 10, 2012 at 8:58 PM

    Wei Ting:u know how to do the question?

    ReplyDelete
  19. AnonymousJanuary 10, 2012 at 9:39 PM

    a....how come q2 say that liquid Y is twice the weight as liquid X?Doesn't make any sense.X is 4.95kg and Y is 8.95kg.This makes my head big!Ahhhhhhhhhhhhhhhhhh!
    Benedict Lum
    p5-6

    ReplyDelete
  20. owenhojunwaiJanuary 10, 2012 at 9:41 PM

    mdm toh,4kg? 5kg/

    ReplyDelete
  21. Wei TingJanuary 10, 2012 at 9:46 PM

    Benedict:Its saying that liquid Y (without container) is twice the weight as liquid X (without container)

    ReplyDelete
  22. Yap Zi yangJanuary 10, 2012 at 10:08 PM

    Q2 and Q3 is hard

    ReplyDelete
  23. AnonymousJanuary 10, 2012 at 10:12 PM

    q2 not enough clues!!!....

    ~ Misha ~

    ReplyDelete
  24. AnonymousJanuary 10, 2012 at 10:23 PM

    aaaaa....
    still makes my head big
    i only see that the last statement then say how heavy is the container.i think its typo error
    Mdn Toh must be weak in her typing.
    Maybe im better than her.
    Benedict

    ReplyDelete
  25. AnonymousJanuary 10, 2012 at 10:27 PM

    Maybe the liquid is with the container.
    Not enough clues.
    Brain going to burst
    Must have indicate whether there is the container or not.So sorry about leaving q2 blank.
    But got try lah!
    At least got statments mah.
    that would prove that i have tried my question
    best way of proving to teachers
    so got prove ah!
    Benedict

    ReplyDelete

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