Q&A - PSLE Math

[mama_10]

Hi,


Need help for below question.
There were 50 questions in a Maths test. Sam answered 85% of them correctly while Nicky answered 80% of them correctly. How many percent more questions did Sam answer correctly than Nicky ?

My kid said how come Sam answered 42.5 question correctly?

Thank you.

[MathIzzzFun]

mama_10:

Hi,


Need help for below question.
There were 50 questions in a Maths test. Sam answered 85% of them correctly while Nicky answered 80% of them correctly. How many percent more questions did Sam answer correctly than Nicky ?

My kid said how come Sam answered 42.5 question correctly?

Thank you.

..cute... well, it is possible that Sam answered part 1 of a 2-part question correctly. Since the question is on percentage, the total number of questions is not important. The question can be changed to :

\"In a Maths test. Sam answered 85% of them correctly while Nicky answered 80% of them correctly. How many percent more questions did Sam answer correctly than Nicky ?\"

cheers.

[mama_10]

Haha!

My kid can get al the paper 2 questions correct but make careless mistake on multiple choice.
How to ‘cure’?
btw, what’s the answer for that question?
Thank you.

[MathIzzzFun]

mama_10:

Haha!

My kid can get al the paper 2 questions correct but make careless mistake on multiple choice.
How to 'cure'?
btw, what's the answer for that question?
Thank you.

(Sam's score - Nicky's score)/Nicky's score x 100%

= (85%-80%)/80% x 100%

= 6.25%

cheers.

[mummyv]

MathIzzzFun thanks for the link to the earlier ques I posted.


Pls help with this question.

ABCD is a square. There are 2 smaller squares shaded in grey inside ABCD. Express the shaded squares as a fraction of ABCD. Thanks http://i49.tinypic.com/2eumkwj.jpg\">

[mama_10]

Hi MathIZZZFun,


Thanks! we got the same answer too.

[MathIzzzFun]

mummyv:

MathIzzzFun thanks for the link to the earlier ques I posted.


Pls help with this question.

ABCD is a square. There are 2 smaller squares shaded in grey inside ABCD. Express the shaded squares as a fraction of ABCD. Thanks http://i49.tinypic.com/2eumkwj.jpg\">

Can u re-post the pic, not visible.......thkq

cheers

[tianzhu]

MathIzzzFun:

mummyv:

MathIzzzFun thanks for the link to the earlier ques I posted.


Pls help with this question.

ABCD is a square. There are 2 smaller squares shaded in grey inside ABCD. Express the shaded squares as a fraction of ABCD. Thanks http://i49.tinypic.com/2eumkwj.jpg\">

Can u re-post the pic, not visible.......thkq

cheers

Hi

The two shaded areas are of different sizes.

The lower square is 1/4 of ABCD.

Divide the top square into 4 equal triangles.

The top square is 4/18 or 2/9 of ABCD.

Fraction of ABCD which is shaded ------ 1/4 + 2/9 ------ 17/36

Best wishes

[mama_10]

need help!


what is the place value of digit 3 in 902.31?
the answer key is tenths but my kid said is 0.3.
what is place value?

thank you.

[mama_10]

need help on Nanyang 2011 CA1 paper 1, question 29.


thank you.