Tutor MathsGuru: Ask me for your burning Maths questions!

[blessedami]

firebird:

Dear maths guru


Please help with the following P6 maths:
1) Mrs Chia baked 120 beef pies and chicken pies. After she gave away 1/4 of the beef pies and 2/5 of the chicken pies, she was left with 30 beef pies. How many chicken pies had she left?

2) The ratio of the number of yellow marbles to the total number of green and red marbles was 7:13. 40% of the marbles were red marbles. After throwing away 65 red marbles that were chipped, 20% of the remaining marbles were red. How many marbles were there left if another 24 green marbles were found to be chipped and thrown away?

3) Alicia gave some beads to Betty such that Betty had 40% of the number of beads that Alica had. After that, Alica gave another 170 beads to Betty. In the end, Betty had 80% of the number of beads that Alica had. How many beads did Betty have in the end?

4) There were 4 times as many boys as girls at a party at first. After 20 boys went home and 16 more girls joined in, there were 6 more boys than girls remaining at the party.
a) How many boys were there at the party initially?
b) How many children attended the party?

Thank you
Firebird

4) Since 20 boys left and 16 girls joined, the diferrence between boys and girls decreased be 16+20=36.

After that the number of boys was still greater than the number of girls by 6.So initially, the difference was 36+6=42

Boys [][][][]
Girls [][ 42]

4u -1u = 3u
3u---->42
1u---->42/3=14
4u---->4x14=56

total--->5x14=70

[firebird]

Dear blessedami


Good afternoon.

Thank you very much for your answer.

With best regards
firebird

[kancheongmum]

Hi tianzhu


Tang did not reply my post about marks will be deducted for writing statemt like this
10.00 am + 2hrs = 12.00pm
my ds has been writing like this and he is not marked wrong till now P6 already. Don’t trust the school teacher cos he doesn’t care. Please help tks.

[maths6a]

kancheongmum:

Hi tianzhu


Tang did not reply my post about marks will be deducted for writing statemt like this
10.00 am + 2hrs = 12.00pm
my ds has been writing like this and he is not marked wrong till now P6 already. Don't trust the school teacher cos he doesn't care. Please help tks.

example:
2hr
3 pm ------arrow 5 pm
you will be penalised if you use the plus and minus sign when writing time duration.

3 hours + 5 hours = 8 hours is ok

Yes nowadays, situation getting from bad to worse.
I have students who told me teachers said it was wrong to label the arrows on parallellograms when you draw the construction.

(p + 5)/2 is marked wrong and told to write (p - 1)/2 + 3
Any comments?

[tianzhu]

kancheongmum:

Hi tianzhu


Tang did not reply my post about marks will be deducted for writing statemt like this
10.00 am + 2hrs = 12.00pm
my ds has been writing like this and he is not marked wrong till now P6 already. Don't trust the school teacher cos he doesn't care. Please help tks.

Hi kancheongmum

I am sorry, I don’t think I can offer you any help this time.

I don’t really go into such details with my boy last year as I expected him to learn from his school .What my role with him was to breakdown the problems and gave him pointers when he needed help. In fact what I showed him were some sketches and hand drawn models and he was left to do the rest of his work himself.

I think the best person to check is your kid's school teachers as they are more familiar with the requirements.

Best wishes

[Daddy]

Dear maths guru,


Need help!

Q. Ming Hao bought 3/8kg of flour. He gave 1/3 of it to his sister and used 1/6 of it. How much flour was left in the end?

Thanks
Daddy

[biniv300]

Deer maths guru,

i need help in this sum


How many seconds does it take the second hand of a clock(12-hour)to make a three quarter turn arond the clock??

cheers biniv300

[pebble]

Hi all,

Pls assist with the following P5 question :

Alan, Brandon, Calvin and Darren shared $192. Darren received 1/7 of the total amount of money received by Alan, Brandon and Calvin. Alan received 1/2 of the total amount of money received by Brandon and Calvin. Brandon received 2/5 as much money as Calvin. How much did Brandon receive ?

[tianzhu]

Hi pebble


Hope this helps.

Happy National Day.

Best wishes

http://farm5.static.flickr.com/4081/4864095323_fa5c6e298e_b.jpg\">

[Dharma]

biniv300:

Deer maths guru,

i need help in this sum


How many seconds does it take the second hand of a clock(12-hour)to make a three quarter turn arond the clock??

cheers biniv300

9 hrs x 60 mins x 60 seconds = 32,400 seconds