Q&A - P3 Math

[mama_10]

Please help! P4 Mathematics questions.


How many times does the digit 9 appear in a 100-page book?

Thanks

[tianzhu]

Hi


From page 1 to 89
Number of digit 9 ------ 9

From page 90 to 100
Number of digit 9 ------ 11

Total number of digit 9 in a 100-page book ------ 20

Best wishes

[usaik]

Hi,

I need help to solve the following question please. Any help would be much appreciated.
http://i56.tinypic.com/rw8ec5.jpg\">

[Thein]

AB=6cm

BC=6-4 =2 cm
CD=4 cm
DE +EF =4 cm
Hence AB+BC+CD+DE+EF =6+2+4+4
= 16 cm

[pinball]

Pls help with the following question :




Apple + Apple + Orange = 330

And Orange + Orange + Apple = 210

What is the value of Apple + Orange = ?


thks

[PiggyLalala]

(Apple + Apple + orange) + ( orange + orange + apple ) = 330 + 210

therefore 3 apples + 3 oranges = 540
1 apple + 1 orange = 540/3
= 180

[jedamum]

usaik:

Hi,

I need help to solve the following question please. Any help would be much appreciated.
http://i56.tinypic.com/rw8ec5.jpg\">

http://i52.tinypic.com/otg6dx.jpg\">
shift the lines out (as above):-
length of thick line = 6+4+6=16cm

this type of working acceptable?

[hihikitty]

jedamum:

usaik:

Hi,

I need help to solve the following question please. Any help would be much appreciated.
http://i56.tinypic.com/rw8ec5.jpg\">

http://i52.tinypic.com/otg6dx.jpg\">
shift the lines out (as above):-
length of thick line = 6+4+6=16cm

this type of working acceptable?

Thats a very smart way of getting the answer. Shifting the lines!

[hihikitty]

My DS at JEI PSLE Math. In the centre they use the torchlight method. E.g. You shine the torch light at one side, the sides shone is same as the opposite side.

[smartmummy]

Hi everyone!

My p3 son always does careless mistakes.I sick of it.In primary one,first question "more" then following question "less" then add for this also.In primary2 first half,he + for subraction and - for sum,and calculationwrong copying numbers from part a to part b.Then I give more prctise and let him knows why he got wrong those questions.Then second have he didn’t get any careless mistakes.Then now primary CA1 exam,copying the numbers from the questions he got wrong,other than that all calculations and models he got correct.SA2, for 1600 he chose 16 thousand instead of 16 hundred,…multiplication error 22 for 32, copying the number from a question 3 for 8.copying the numbers from question is not related just any number he put.Why like this?Is anyone face these problems?Please give me some suggestion to improve him!:( Thanks in advance!